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.