Curiosity consumes Minoru as she wonders about the authentic bond between her beloved childhood friend Tsugumi and her twin sister Kozue.
After flunking his medical school entrance exams, Tetsu Sakura feels dejected and decides to spend his summer looking after his deceased grandmother's house. One day, while taking a walk with his canine companion, Tetsu spots a Zero Fighter aircraft zooming through the sky before crash-landing in a nearby field. A wounded man, Haruyuki Onaga, emerges from the plane and believes that the Second World War is still ongoing. Even as Tetsu tends to the injured stranger, his true identity remains shrouded in mystery.
There are numerous hurdles in high school romance, though most of them are amusing.
Leo Asaka, a second-generation actor and self-made man, resents being compared to his famous father. Despite his determination to succeed on his own, Leo is offered a leading role in a movie directed by a renowned filmmaker. However, when he discovers that Eito Yanagi, a notorious bad boy actor, will be his co-star, Leo is apprehensive. The two alpha males are trapped in a hotel room to bond, and during their confinement, Leo digs up a secret about Eito that could alter both of their futures.
Filled with shame for having dishonored her family, Hibari decides to isolate herself in a warehouse. Nonetheless, fortunate events lead her to the discovery of a priceless library hidden within, which forever changes the trajectory of her life.
Suzuka was told by her friend Miyabi during a tarot card reading that she would soon meet the love of her life. This made her ponder if it could be Konno, a boy who had previously revealed his feelings for her while they were in the same homeroom class in D, just one year before. Yet, before Suzuka could fully comprehend her feelings, something occurred with Konno...
A timid high-school student named Sousuke has romantic feelings for his childhood companion Yobiko. Yobiko has been the target of crow attacks since her early years, leading the other children to keep their distance from her. However, Sousuke has consistently been her protector. After the park Yobiko took refuge in during crow attacks is destroyed, Sousuke vows to intensify his protective efforts for Yobiko.
Hijiri adores Naoya as her favorite senpai and relishes their afternoon meetings.