Itsuka, Hero

The story follows Akayama Seiji (portrayed by Kiritani), a dedicated staff member at a children’s welfare facility. One day, due to unforeseen circumstances, Akayama suddenly disappears without a trace. Twenty years later, he returns after losing everything, only to find that the five students who once held dreams and hopes in their childhood have drastically changed. As he reconnects with them—now disillusioned by the harsh realities of life—Akayama fights back against a corrupt, all-powerful force.

One night, while Kimihara Ibuki is working alone on the night cleaning shift, Higuchi Yukari arrives with some refreshments. “There’s someone I want to introduce to Ibuki…” she says, bringing along a man. He is Kosuke, Yukari’s fiancé. Impressed by Kosuke’s high qualifications and kind personality, Ibuki asks him to introduce her to a man. Kosuke responds enthusiastically, “I know the perfect guy!” and begins telling her about a certain man…

This spinoff depicts a story that delves into Himuro Kaito’s true identity (portrayed by Miyase Ryubi). It reportedly contains hidden clues that unravel the secrets scattered throughout the main drama series.