妹が一日一回しか目を合わせてくれない。 (Series) favorite_border

[DeepL Translation - needs review] Volume 1: My sister and I only see eye to eye once a day. This is a manga about a little sister who cosplays to get her brother's attention. She shows off her Chinese, school swimsuit, bunny girl, and other cosplays and enjoys her brother's reaction.

(Translator: DeepL)