Yōichi, who had never met his parents, suddenly receives the news of his biological father's death. The will left by his father to Yōichi is to choose 'one' from among the 5 'sister candidates' to be his sister!?"...Don't want to do anything at all. Want to be lazy with Onii-chan a bit." (by Serine)
One day, Yoichi who grew up while not knowing his parents has received the news of his father’s death. His father left behind a testament——which said he is to pick only one out of five ‘little sister candidates’?!“…I don’t want to work, I want to laze around together with Onii-chan.” (By Serene)“Let
