Shogo Kai is a lawyer at one of the big 4 law firms in Japan. He is good at his job, but he is arrogant. Shogo Kai only thinks about winning and he thinks the only way to satisfy his clients is to win. He is getting close to becoming a senior partner at the law firm. Shogo Kai's boss worries about his focus on winning above all else. As a condition of his promotion at the law firm, his boss asks him to hire a young lawyer as an associate. Shogo Kai interviews prospective young lawyers and meets Daiki Suzuki. Daiki Suzuki has high intelligence and his memory ability is amazing.

Tomoki Sakai is a first-year high school student. He has talent for diving and has been partaking in the sport for six years. He is also member of the dive club MDC, but the club is on the verge of shutting down due to budget deficits. Kayoko Asaki becomes the new coach of MDC and informs the team that they must produce an athlete on the national dive team for the next Olympics. Otherwise, their team will shut down forever. Tomoki Sakai has rival divers: Yōichi Fujitani and Shibuki Okitsu.

Oozakura Mimi is an industrial physician who has never been in a relationship. To Mimi, protecting the health of the employees is the most important thing and romance comes after that. Mimi later gets to know someone through social media. Although Mimi does not know the identity of the person, he is actually someone who is working in the same company.

Kagura Ran is a former child actor-turned-lawyer who left the legal circle after her best friend was framed of murder. A year later, an article written by scriptwriter Kurosawa Jin about her ends up circulating online in which she becomes acknowledged as a capable lawyer who has never lost a case. She decides to resume her work as a lawyer once more, and attempts to regain her trust in the law by joining forces with Kurosawa in order to exonerate her friend from the accusation and resolve the case once and for all.

The main characters of this story are eight high school boys who are in the so-called "Yarogumi", the only class which has only boys. Of course, there is no opportunity to interact with girls and the group has lost the ability to talk to them so, in order to get a girlfriend, the eight work hard to overcome their "illness", even though they always end up failing.