Oniichan dakedo Ai sae Areba Kankeinai yo ne!  

OniAi, As Long as Theres Love, It Doesnt Matter If He Is My Brother, Right?, お兄ちゃんだけど愛さえあれば関係ないよねっ, As Long as There's Love, It Doesn't Matter If He Is My Brother

After six years apart, siblings Akiko and Akito Himenokouji are finally reunited. They were once very close but were separated after their parents passed away and they were placed with different foster families. Now that they can live together and attend the same school as brother and sister, things are looking up for them! However, it quickly becomes apparent that Akiko has a strong sibling complex towards her brother. Unfortunately, Akiko's efforts to win her brother's affection may be in vain since he only sees her as his little sister who needs protection. The situation becomes even more complicated when other girls move into the household, causing Akiko to become even more determined to keep her brother's attention on her. With other girls flaunting their swimsuits and fighting over who gets to take care of him, it'll be quite a challenge for Akiko to maintain her plans for her brother. Despite these obstacles, the household is sure to be filled with excitement and fun!