Series by 惣領冬実

Michiru is an ordinary high school girl who has not yet figured out romance. Lately she has felt unsettled as attention gathers around the brothers living next door, Ryohei and Shusuke. She can still act naturally with Shusuke, but Ryohei makes her self-conscious. Then she sees Ryohei kissing his girlfriend Yoko. The shock forces her to face feelings she had not named before.