《Minamikun no koibito》 is a TV series adapted from the manga by Haruki Uchida, which reinterprets the original story in a novel way.In this version, the plot has an interesting twist: Chiyomi and Minami were originally childhood sweethearts who grew up together like brothers and sisters.However, the turning point of the story is that one day, Chiyomi's longed-for lover Minami became only 15 centimeters tall, equivalent to 1/10 of his original body size.This unexpected change plunged the relationship between the two into an unprecedented situation.

Faced with this fantastic plot setting, the series explores how the two adapt to this new situation and how their emotions develop amid such challenges.Chiyomi and the shrunken Minami must face the inconveniences of life together, while also dealing with the growing emotional entanglement between them.This setting not only brings light-hearted and humorous moments to the audience, but also delves into themes of love, growth and acceptance of change.

Chiyomi Horikiri (Ai Iinuma), who lives on the coast of Shonan, is currently challenging for the last basketball prefectural tournament qualifier of her high school career.Under the watchful eyes of mother Kaede (Kimura Yoshino), grandmother Yuriko (Kaga Mariko), unrelated father Shintaro (Takeda Shinji), and younger brother Takuma (Banke Tensong), Chiyomi, who has been a substitute for thousands of years, finally made her appearance.By chance, at this time, Chiyomi's childhood sweetheart, favorite person, and basketball star Minami Hiroyuki (Yuzaki Yagi) came to the gym to cheer her on.It's a pity that the game was lost, leaving a trace of regret.At this time, Nanjun comforted and encouraged Chiyomi...Chiyomi was somewhat uneasy about Anan, who was perfect at all times.

Soon, Nanjun's college basketball team will hold a game.Chiyomi said she was going to cheer for Nanjun, and they had an agreement after the game.

Then the day of the game came. Chiyomi came to the gym very early and saw Anan talking cordially with basketball coach Misuzu Sagawa (Reina Takeda).Chiyomi felt that she did not have the mature temperament of Misuzu, and she also felt alienated during the competition.

With mixed feelings, Chiyomi went to the meeting place with Nanjun as agreed, but for some reason, after waiting for a long time, Nanjun did not show up...?

While Chiyomi (Ai Iinuma) was waiting at the agreed place, she was surprised to find that Nanjun (Yasaki Yagi) had turned into a villain only 15 centimeters tall.Still, she managed to hide him in her handbag and take him home.Chiyomi attempts to bathe a smaller version of Nan-kun, but this becomes extremely difficult due to his small size.Despite this, Chiyomi still felt an inexplicable sense of happiness.Seeing the tears shed by the tired Nanjun after he fell asleep, Chiyomi also felt some heartache.

Chiyomi suddenly remembered that the place where Nanjun shrunk was near the bus stop, and his clothes and belongings might have been left behind.So she rode to the bus station and once again felt the impact of reality caused by Nanjun's accident.

The next day, Chiyomi left Nanjun at home uneasily and went to school.This abnormal behavior worried her mother Kaede (Kimura Yoshino), grandmother Yuriko (Kaga Mariko), and handicraft shop clerk Chako (Muroi Shigeru), wondering whether Chiyomi was hiding something.Finally, Kaede decided to secretly check Chiyomi's room to see if there were any secrets...!

Unable to turn Minami Hiroyuki = Minami-kun (Yasaki Yagi) into a 15cm villain, he was left alone at home. Horikiri Chiyomi (Iinuma Ai) hid him in her breast pocket and went to school together.The two of them, who had been in a good mood since the morning, had just walked out of the house when Misuzu (Rena Takeda), the coach of the college basketball team and a secret crush on Minami-kun, showed up!“Where did you hide Nanjun?”“Go tell him and let him return to the team”.Facing Mei Ling who was pressing closer and closer, Chiyomi could not tell the truth and could only remain silent.Mei Ling was very worried about Nan Jun. Chiyomi only left one sentence: "(I will) believe his words and wait patiently"...

Although she was uneasy in her heart, Chiyomi still tried her best not to be noticed by the people around her, talking to Nanjun, eating lunch together on the roof... enjoying her school life with Nanjun.Moreover, Chiyomi went to the handicraft department to make clothes for Nanjun...!

At the weekend, Chiyomi and Nanjun went to the amusement park together.The two of them were chatting happily while walking through the Crow Shopping Street, but unexpectedly, Hisako Ochako (Shigeru Muroi) saw them from the dark!She excitedly reported to Kaede (Kimura Yoshino) and Yuriko (Kaga Mariko) that little Nanjun was in Chiyomi's pocket!%but......

Soon after, Nanjun’s father Haruyuki (Sawamura Kazuki) appeared at the grilled chicken restaurant Shintaro (Takeda Shinji) runs.Everyone in the Horikiri family also gathered together, and in the lively atmosphere, a secret that Nanjun didn't know about his mother, Kaoruko (Akiko Yagi), was revealed...!

In the room where Chiyomi (Ai Iinuma) was supposed to be alone, Chiyomi seemed to be talking to another person and called him “Minami-kun”.Feeling strange, Kaede (Kimura Yoshino) decided to walk into the room.

Feng asked: Is Nanjun (Yagi Yusei) here?“Chiyomi replied: ”Yes.“What surprised Kaede was that Chiyomi was holding a ”Nanjun doll“ made by the Handicraft Department.Chiyomi tried her best to cover up and finally got through, but she could not eliminate the doubts in the hearts of Kaede (Kimura Yoshino), Yuriko (Kaga Mariko), and Shintaro (Takeda Shinji).Moreover, she felt ashamed for talking to herself in front of the doll.

At this time, Kaede, Yuriko, and Shintaro were holding a countermeasures meeting to discuss the issue of Chiyomi talking to the Nanjun doll alone.After talking about their experiences with dolls when they were young, they came to the conclusion that Chiyomi should not be regarded as a strange person.

The next morning, Chiyomi went to school.She also showed the ”Nanjun Doll% to Hisako Kimura=Chako (Shigeru Muroi).Chiyomi successfully avoided everyone's suspicious eyes, hid the real Nanjun in her pocket, and walked to school in style.

Chiyomi and Nanjun felt happy to be together forever, but after watching Nanjun's college basketball game together, the two encountered an unexpected thing!

Horikiri Chiyomi's (Iinuma Ai) bag was robbed, and the murderer took the money. The bag and Minami Hiroyuki (Yagi Yusei) contained inside were thrown into a park far away from the crime scene.Nanjun was in pain all over and was at a loss. At this time, he met a woman who was as miniscule as himself-Sanae Tomita (Ryoko Kuninaka)!

Nanjun and Sanae entered “boyfriend”'s pocket together and went to Sanae's home - meeting “people in the same situation for the first time”. Nanjun felt incredible and happily talked to her about the experiences after becoming a 15cm villain.All sorts.

At this time, Chiyomi discovered the robbed bag, but she was heartbroken and horrified to find that Nanjun was not inside.She searched desperately around the bag.Amid the anxiety that she might never see her again, Chiyomi finally reunited with Nanjun in the park!“I will never leave you again”, Chiyomi cried and apologized.Namjoon could feel her heartbeat and tried to comfort her.So the two decided to go to a local summer festival.

For the festival, Kaede (Kimura Yoshino), Yuriko (Kaga Mariko), Shintaro (Takeda Shinji), Takuma (Banke Tensong)... the Horikiri family is bustling.Hisako (Shigeru Muroi) of the handicraft shop also selected kimono fabric for Nanjun“ Doll”, and everyone was very excited.And Shintaro accidentally witnessed the conversation between Chiyomi and the mini version of Nanjun!

Although Shintaro decided not to tell anyone, his covert behavior made other family members suspicious...!

Seeing Sanae (Ryoko Kuninaka) who was in the same situation suddenly disappear, Nanjun (Yasaki Yagi) felt hesitated.Although Nanjun didn't want to believe Sanae's statement that God gave us a special time to say goodbye, facing the reality, he felt an unbearable pain.As for Chiyomi Horikiri (Ai Iinuma), who knew nothing about it, Nanjun still cheered up and said: "Let's come to the temple fair together next year."“

After the temple fair, at ”Kana Hair Salon“, Kaede (Kimura Yoshino), Yuriko (Kaga Mariko), Yamataka Zenzo (Kikaishi Ken), Kimura Hisako=Chako (Muroi Shige) and others gathered together to hold a small celebration.Kaede and Yuriko worry that Chiyomi will be depressed because Nanjun didn't come back.Only Shintaro (Takeda Shinji), who knows the existence of the ”15-centimeter Nanjun%, is full of inner conflicts and behaves strangely... Moreover, Kaede and Yuriko become more suspicious of Shintaro's behavior, triggering a vicious cycle...

During this period, Chiyomi's father and Kaede's ex-husband Takeshi (Takeshi Tomizawa) appeared in the town.Without knowing each other's true identities, Shintaro and Takeru accidentally talk in the park.Chako, who happened to witness this scene, thinks that the reason for Shintaro's suspicious behavior may be Takeshi...?Later, Takeshi finally appeared at Horikiri's house, and even Nanjun's college basketball team coach Misuzu (Reina Takeda) suddenly came to Horikiri's house to ask Chiyomiko for guilt!?

While Nanjun was spending happy time with Chiyomi, he also felt uneasy. Nanjun was worried that he would disappear soon.He suddenly remembered what Kaede and Yuriko told him about his mother when his mother Kaede (Yakiko Yagi) had just passed away, and he began to think about how to spend his last time.

“I am going to disappear soon, in front of Chiyomi”, “I am already dead” - Hearing Nanjun (Yagi Yusei)'s shocking statement, Horikiri Chiyomi (Iinuma Ai) couldn't bear it.In school and in the handicraft department, Chiyomi was distracted and unable to think about the future.Finally, she ran to the place where Nan Jun had a car accident and shouted: “I want to become smaller too!Be like Nanjun!”Then rush to the truck...!?

At this time, at the Horikiri house, Yuriko (Mariko Kaga) and Shintaro (Shinji Takeda) discovered that Kaede (Yoshino Kimura) was behaving strangely.Kaede told them: “I heard Chiyomi and Nanjun talking last night.”Shintaro finally admitted that he also saw Nanjun, who was only 15 centimeters tall.The adults felt sorry for Chiyomi and Nanjun working so hard to keep the secret - they decided: “If this is their wish...”While waiting for the two to confess, they agreed to continue to pretend not to know.

Chiyomi and Nanjun went to karaoke in order to have a slow conversation in a place where no one was around.Nanjun is like his mother Kaoruko (Akiko Yagi) once said, “I am very happy to be able to spend my last days with Chiyomi like this.” Despite Nanjun's gentle smile, Chiyomi couldn't help but shed tears.Seeing Chiyomi like this, Nanjun made a request...

Afterwards, the two went to Nanjun's hometown, where his father Haruyuki (Sawamura Kazuki) lived.In order to put an end to the tense relationship with his father that had long been caused by Kaoruko, Nanjun conveyed his thoughts to Haruyuki in some way...!?

The love between Chiyomi (Ai Iinuma) and Nanjun (Yasaki Yagi) is getting stronger and stronger.Finally, the secret was revealed to the Horikiri family's Shintaro (Takeda Shinji), Yuriko (Kaga Mariko), Kaede (Kimura Yoshino), and Chako (Muroi Shige), and they enjoyed the fireworks together and spent a wonderful summer time.But the moment of separation gradually approached, and no one said anything about it——.

One morning, Minami's father Haruyuki (Kizuki Sawamura) came to visit Horikiri's house.Haruyuki proposed to talk to the university professor who had taken care of him before and asked him to investigate.“As a parent, you cannot do nothing”.The painful feeling was conveyed to everyone, and Nanjun also understood his father's thoughts and decided to get tested!

After returning from the examination, in order to satisfy Nan“'s desire to eat a cake” that was almost as tall as himself, the Horikiri family prepared a small cake for him and everyone enjoyed it together.During this process, Nanjun’s figure became more and more blurred...!?

When “that moment” was about to come, the two accepted Feng's proposal and went to a place full of memories...