Takahiro Miyashita

Sada Seiya, works as as the ace of the second sales division known informally as the “Ikemen Department” in the Intermedia Communications Department at a general trading company. Due to Sada’s natural tendency to always try and look cool, he stuck to the facade of having “a long-term girlfriend” and ended up in a situation where he was “0.5D,” or half a virgin. However, after ten years, Sada falls in love again. He decides to seek love advice from Uno Daiki, a junior both from his university and his company, who has had eight girlfriends in the past…

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Scriptwriter Yokota Yuji, who is troubled by the fact that his next work is not going as well as he had hoped, receives an email offering "regression sleep", which claims to allow him to face his past self. Yokota attempts regression sleep, hoping to lead himself to becoming a successful scriptwriter by advising and encouraging his 30-year-old self. Although the young Yokota is perplexed by the fact that the 30-year-old version of himself that appears before him is far from his ideal image, he accepts the advice of his future self and follows a new world line that branches out from a promise he made with his theater friends and an encounter with Asami, a fan of Yokota's.

Sada Seiya, works as as the ace of the second sales division known informally as the “Ikemen Department” in the Intermedia Communications Department at a general trading company. Due to Sada’s natural tendency to always try and look cool, he stuck to the facade of having “a long-term girlfriend” and ended up in a situation where he was “0.5D,” or half a virgin. However, after ten years, Sada falls in love again. He decides to seek love advice from Uno Daiki, a junior both from his university and his company, who has had eight girlfriends in the past…