Summary
“From the beginning, I never thought of her as an older sister.” Sakura became the older sister of university student Mizuki after her father remarried. He tries to accept Mizuki as his younger brother, but he takes a bath together, sleeps with him, and the physical contact from Mizuki only becomes extreme…!? Familiar boyfriends such as childhood friends, juniors, and teachers reveal the true nature of beasts!!
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