I Suddenly Have an "Older" Sister! summary: You are reading I Suddenly Have an "Older" Sister! manga, one of the most popular manga covering in Comedy, Ecchi, Romance, Shounen, Slice of life genres, written by Rokushou Kokuu at MangaBuddy, a top manga site to offering for free. I Suddenly Have an "Older" Sister! has 20 translated chapters and translations of other chapters are in progress. Lets enjoy. If you want to get the updates about latest chapters, lets create an account and add I Suddenly Have an "Older" Sister! to your bookmark. ***A young "older" sister suddenly appears before me...?! A love-comedy of "irregular" siblings living together. ***Asami, a beautiful but mysterious girl appears before Ryosuke, the protagonist who is in his thirties, and claims that she is his sister. She is the sister of Ryosuke's brother's wife, in other words, she is somewhat Ryosuke's sister... Aiming to be the ideal older sister, she decides to engage in extreme big sisterly acts!