Synopsis: Yosuga no Sora

Following the tragic demise of their parents in an accident, Haruka and his younger sibling Sora were compelled to relocate to the hometown previously owned by their late grandfather. The siblings were flooded with memories of happy moments spent at their grandfather's place as they were warmly welcomed by old friends Nao, Ryouhei, Akira, and Kazuha. Haruka found solace in nostalgia, but his peaceful existence was hampered by an unfulfilled historical promise, a lost fortune, and the uncovering of the real reason for their relocation - all amidst the serene summer days.