初恋マスターアップ

The protagonist Nagatomi Yukihisa, has a past which ended his youth in disappointment. Several years after graduating――While living his life without making any change, he is informed that his estranged father has left him a vast amount of fortune, including his house as his inheritance.

Yukihisa suddenly comes into a lot of money, and taking his aunt's advice, he decides to revisit something left unfinished during his youth――Making a video game.

Thus begins assembling​ staff members.
A former associate​, now a popular illustrator, Ichijiku Konoka.
A childhood friend, supporting Yukihisa in reuniting the team, Manganji Urara.
And a new member, taking Yukihisa's place as the lead writer, Hawa Wakana.

This is a story of an awkward boy and girls revisiting their youths. While being supported by many people, what kind of future awaits Yukihisa and his friends――

[Translated and edited from the official website]