Sky of Connection

The twins Haruka and Sora Kasugano return to their grandfather's countryside home after a tragic accident took their parents. Childhood friends Nao Yorihime, Akira Amatsume, and newcomer Kazuha Migiwa welcome them back, creating a sense of nostalgia. However, the twins' peace is short-lived as unresolved emotions from past vows resurface, influencing their new lives. A personal secret also begins to unfold, one known only to them.