Natsu e no Tobira

In Fujisawa, where the skies are bright and the seas glisten, Sakuta Azusagawa is in his second year of high school. His blissful days with his girlfriend and upperclassman, Mai Sakurajima, are interrupted with the appearance of his first crush, Shouko Makinohara. For reasons unknown, he encounters two Shouko's: one in middle school and another who has become an adult. As Sakuta finds himself helplessly living with the Shouko's, the adult Shouko leads him around by the nose, causing a huge rift in his relationship with Mai. In the midst of all of this, he discovers that the middle school Shouko is suffering from a grave illness and his scar begins to throb...

Shiratori Ryuushi is a young artist-in-training, about to start studying at a vocational school. Arriving at his new lodgings, Narutakisou, he finds himself the focus of attention for the collection of weirdos that inhabit the place. He also meets and falls for the landlady, Aoba Kozue, who seems to be both lovely and charming. However, Kozue is not what she seems to be... in fact, she's more.

The summer of a man's boyhood memories continue. Still on the cusp between childhood and being a man, he has linked with the ghost of a young woman from the World War 2 era. She, and the ghosts of other young ladies from that time, continue adventures alongside their linked partners, learning more about each other and travelling through time via their supernatural connection. While he struggles to see his crush on her come to fruition, meanwhile his friend—a girl his age, pretending to be a boy—seeks his attention as well.

Yuna Ichihara's spring break is far from pleasant, especially after she sends off her best friend Sacchan, who is moving away. But while heading home, the timid girl brightens up when she encounters a boy who looks exactly like her first love—a prince from a shoujo manga. Subsequently, she finds herself in a peculiar situation with the mature Akari Yamamoto, a new neighbor who immediately befriends her. Now attending the same high school together, Yuna shows interest in Akari's brother Rio—the same mysterious and handsome boy she met during spring break. Likewise, Akari is falling for Yuna's carefree childhood friend, Kazuomi Inui. However, love is not at anyone's fingertips, as the relationship between these four contrasting friends faces complications, preventing them from moving forward. To discover the truth between them, they will need to confront their own struggles and uncover secrets hidden among themselves.