An Older Sister Proposed to by Her Younger Sister ~My Younger Sister Who's Been Glued to Me Since Childhood Gets Even More Clingy as She Grows Up!?~

Imakawa Kayo is loved by her younger sister, Imakawa Karen. Karen is always clinging to her older sister Kayo. Kayo was happy about this. Not only when they were small, but even after becoming a high school student, Karen continued to cling to her older sister Kayo. Rather, since becoming a high school student, she seems to be more proactive──!? Also serialized on Kakuyomu.