Troubled by guilt over a past disaster, a teacher proposes a co-ed experiment after talks of an all-boys and all-girls school merger stall.
With the co-ed classes struggling to get along, Heisuke suggests a cultural festival. Details about his role in a 14-year-old chapel fire emerge.
Heisuke and Satoshi recall their doomed love triangle. Culture festival planning moves forward, but the merger faces new challenges.
Yuko’s father angrily reflects on the aftermath of the chapel fire. Romance blossoms between students. Risa tells Handa who she wants to marry.
Furui faces an unexpected consequence for dating Birken. His classmates find a creative way to get revenge on his behalf.
Nakai is off to a decent start in the race, but something’s on her mind. Satoshi shares a hunch with Heisuke. Nakai shares shocking news with Ebisawa.
Donmai and Ippei reach a crossroads in their affair. Murai announces their gender identity to students. Nakai makes a labor of love for her school.
The class rallies around Murai’s transgender identity. Risa and Heisuke grapple with their feelings. A troubled figure from Heisuke’s past returns.
An unwelcome reunion opens old wounds for Risa. The chief priest ponders remarrying. Heisuke approaches Risa with a stunning revelation.
The culture festival ends on a high note. Heisuke makes a confession to Yuko, and then the rest of the school. He receives a shocking response.