The story takes place after the TV drama series Ossan's Love (2018). It's been a year since Haruta and Maki pledged their undying love. Haruta has now come back and receives a warm welcome from familiar faces, his boss Musashi Kurosawa and other colleagues. Justice Yamada, a recruit who has been recently assigned to this branch, welcomes him too. One day, completely out of the blue, the headquarter-based project team "Genius 7" shows up at the Second Sales Branch. Project leader Jin Mamiana orders the Sales team to support them in their big project. Maki, who had been transferred and works now at the head office, is among the project team members with Mamiana. Haruta and Maki grow apart, and Haruta teams up with Justice. Then Kurosawa gets involved in an accident and loses his memory, but the loss of his memory is selective and he has forgotten only Haruta. However, when Kurosawa sees Haruta, he falls in love again.. Hilarious and heartwarming, the final battle of Ossan's Love begins.
田中圭
as 春田 创一
吉田鋼太郎
as 黑泽 武藏
林遣都
as 牧 凌太
大塚寧々
as 黑泽 蝶子
志尊淳
as Justice Yamada
Daichi Kaneko
as 栗林 歌麻吕
沢村一樹
as Jin Mamiana
伊藤修子
as Maika Segawa
Rio Uchida
as Chizu Arai
眞島秀和
as Masamune Takekawa
児嶋一哉
as Teppei Arai
