Bokura No Suki Wa Warikirenai summary:

"From now on, I'll protect you". Yui, a high school sophomore, returns to her hometown for the first time in eight years due to the reunion of her divorced parents. Reunited with her popular older brother, Hayato, and her handsome grown-up childhood friend, Ritsu, a fascinating new life is unavoidable! ...Until she realizes she may be in love with her brother. "Date me? You can use me as a disguise to hide your feelings for him." A heartbreaking love triangle!