This drama is adapted from the manga of the same name and tells the story of Akiyama Sei (played by Kaito Miyachimi) and Hoshikowa (played by Aoi Wakana).) are childhood sweethearts who have been as close as family for 26 years.Sheng has been secretly in love with Xiaohe since childhood, but he hides his feelings and maintains the status quo; because Xiaohe witnessed Sheng and his lover breaking up in middle school, he was afraid that the relationship would break up, so he chose to seal his feelings for Sheng and determined to remain friends for life.

However, one night when they were 26 years old, the two spent an intimate night drunk.Sheng took this opportunity to express his secret love to Xiaohe for many years, but Xiaohe was confused and wavered because he insisted on his childhood sweetheart.Sheng hopes to take the relationship further, but Xiaohe tries his best to avoid it, and the two fall into complex emotional entanglements.

Akiyama Sei (Miyachika Kaito) and Hoshikowa (Aoi Wakana) are childhood sweethearts who grew up together.In middle school, the two had a vague affection for each other, but have maintained a close childhood sweetheart relationship since then.Now they work as planners at different gaming companies in the same building.

One morning, Xiaohe woke up and found Sheng lying next to him...and both of them were almost naked!In extreme confusion, she recalled that the night before, she had been betrayed by her colleague and boyfriend Yoshida Sosuke (Jumi Totsuka), who had been dating for two and a half years.One night.Xiaohe felt that he had done something irreversible and hurriedly knelt down to apologize.

Although it was the weekend, Xiaohe rushed to the company in a hurry.Colleague Ryoko Kihara (Maho Noami) called her, but she was absent-minded... Kowa's mind was filled with holy things.She recalled that in middle school, after Sei broke up with his then girlfriend Saito Kaede, he became unwilling to get close to others, which made Xiaohe feel that Sei was scary.Therefore, Xiaohe decided to maintain the closest and safest relationship between their childhood sweethearts.

Akiyama Sei (Miyachika Kaito) and Hoshikowa (Aoi Wakana) are childhood sweethearts who have been together since they were sensible.

On the day that Kowa was dumped by her boyfriend and colleague Yoshida Sosuke (played by Totsuka Junki) who she had been dating for 2 and a half years, the two spent the night together, but in fact they had been missing each other for many years...The two people who finally confirmed their feelings for each other successfully realized their “late first love” and became lovers.

Then came the day of the first date——.Sheng and Xiaohe went to the aquarium. Contrary to Sheng who expressed his feelings directly, the sudden change in the relationship between the two from childhood to now confused Xiaohe and he could not be frank.Unknowingly, I was too concerned about it, and I didn't dare to look into Sheng's eyes...Unconsciously, I shook off the hand that Sheng wanted to hold, etc., and panicked about everything!Then, the Holy Spirit tolerates such small things with love and says, "Just take your time."

At the same time, the two attended their high school reunion.Then, Kaede Saito (played by Ren Ishikawa), Sei's ex-girlfriend from high school, appears in front of Kowa who is happy to reunite with his friends.See Sei and Kaede of Kaede who have grown up and become lovers...?

After a long time, the first love between the two childhood sweethearts finally started to work, and they had a premonition of ups and downs early on──!?

Akiyama Sei (Miyachimi Kaito) and Hoshikowa (Aoi Wakana) graduated from childhood sweethearts and became lovers.Not only does “ like ”, but he also openly talks about things that make him jealous, and the bond between the two of them will become deeper and deeper.

On the other hand, Kazuto's colleague and ex-boyfriend, playboy Sosuke Yoshida (played by Totsuka Junki), and Kazuo's ex-girlfriend from high school days, Kaede Saito (played by Ren Ishikawa), are actually related!The two people, who each wanted to get back together with Sheng and Xiaohe, secretly joined forces to plan the “plunder operation”.

A week later——.Xiaohe didn't know anything about this, so he was invited to a dinner party to discuss with clients, and went to the restaurant with Sosuke.For some reason, Sei and Kaede also appeared there...Moreover, it is said that the person in charge of the client cannot come.That's right, this is a battle disguised as accidental designed by Sosuke and Kaede!

Just as Sosuke and Kaede expected, the four of them hurriedly ate together.Even though it was their first meeting, Sei and Kokazu were confused by Sosuke and Kaede, who were like-minded.However, Sosuke and Kaede looked askance at these two people, confessed that they were Sei and Kowa's former lovers, and started reminiscing about their relationship...!?

Current boyfriend, ex-boyfriend, current girlfriend, ex-girlfriend - the four awkward people sat around the dinner table at the dinner party. The pure love between Sheng and Xiaohe encountered a big crisis!?What is the fate of this four-corner relationship...?

Faced with the farce of their ex -boyfriend Yoshido (Tsuki Tsukasuka) and his ex -girlfriend Saito Feng (Ishikawa Lian), Akiyama Sheng (Miyama Hai Dou) and Xing Xiaohe (Kwai Ruo Cai) are getting deeper and deeper.The two feel increasingly felt that the other party is getting more and more important in their hearts. I want to meet each other as soon as possible and want to be together.In the end, the two decided to live together.

To this end, Sheng He Xiaohe first intended to report to his parents truthfully that they were seriously interacting and obtained the permission of cohabitation.So they went to visit their parents' house.

Because they were to say hello to their parents who grew up solemnly since they were young, they were slightly nervous.However, Sheng's father, Mao Mao (Gua Shenghe) and Mother Tao (Kubada Mo) said warm words to them, making them feel a lot of peace of mind.

After that, because Xiao He's father, Yingzhi (Maruki Hide) was not at home, Shenghe Xiaohe went to the park full of memories.The two were happy to come here again. When they kissed, they suddenly heard“of their hands!”Shouting.Looking at the sound, Yingzhi, who had never been at home, ran over.While soothe the British rule of the two people's intimacy, the three returned to Xiaohe's home.However, Xiaohe's mother Muzi (prototype of Mingzi) refreshingly agrees, but Yingzhi objected stubbornly ...!Intersection

Akiyama Satoshi (Miyamin Dao) and Xing Xiaoka (Aoirana) have also successfully obtained the recognition of their parents who have been protecting themselves since childhood, and finally began their long-awaited cohabitation life.Even if they are busy with work, they can meet every day, and they don’t have to go home after the date... They cannot hide the joy of the new life that is about to begin.

In this case, Yoshida Sosuke (Kunitaka Tozuka) told Kowako that his plan passed the internal competition of the company.And he was also selected as the captain, very happy!Reliable and good negotiation object·Renko Kihara (Maho Noha), a junior who publicly stated that he was a fan of Kowa. Planner·Hide Homoto (Kenji Kojima), and programmer·Haku Kono (Kimoki Nishida) conducted togetherNew game development, but for leaders’ qualifications?A questioned incident happened...!?

Xiaohe, who started planning, and Sheng, who started working in the new team, were very busy with each other!Because of different life cycles, the two people who decided to sleep in different rooms live a staggered life every day...Although feeling lonely, there are more and more things that are small and uneasy about the difference between life habits from the saints.

In addition, when the two passed each other, Enomoto pressed against Xiaohe step by step...! A new triangle relationship began!?Room signals begin to light up between Saint and Xiaohe...!?

开始了期望已久的同居生活的秋山圣（宫近海斗）和星小和（葵若菜），由于各自的工作都很忙，突然开始了交错的生活……。在这样的情况下，圣非常担心深夜独自回家的小和，决定连续几天去巴士站接她。但是，小和开始觉得这件事会不会成为圣的负担，于是告诉他不用再来接他了。

某天晚上，家在附近的后辈·榎本秀（小岛健饰）送小和回家。决定顺道去便利店的2人，竟然在那里和圣突然相遇了！于是表情僵硬的圣，从小和身上移开视线…。

一声不吭地回到家，被拒绝接自己却让榎本送自己回家的小和打击、焦躁的圣，罕见地爆发了感情。小和在反驳这样的圣的过程中，开始一起生活以来积累的生活习惯的不同导致的郁闷爆发了出来，忍不住说“如果这样吵架的话…青梅竹马的关系不是更好吗？”说了违心的话…。

第二天早上，小和反省自己说得太过分了，但房间里却没有圣的身影——。

即使是从小就很熟悉的青梅竹马，一起生活时也会面临生活习惯的不同。

并且，正因为互相思念而产生的误解。

究竟，擦肩而过的两人，能否再次走到一起呢……!?