Flower Ring

Haruka's crush gentle, handsome Takuei is her sister's boyfriend. She knows it's a forbidden love, but she can't suppress her feelings for him... They end up meeting in secret to have sex. Haruka can't leave him, can't give up on him, even if her romance is destined to meet a sad end... In addition to this story about pure love that will make you cry, this volume features four other stories by the same author.

from Renta!