「大きくなったらえっちなことでもなんでもしてあげる！」と小さい頃、言ってくれた幼なじみのお姉ちゃんを手のひらの上で転がしたい。 (Associated Names)

The main character’s name is Natsume Sho. He was a boy who fell in love with his childhood older sister when he was little. At the time, he was a crybaby and weak, always hiding behind the girl he fell in love with for the first time…… That one girl was Nakajima Sawa. When she…