My childhood friend offers to bathe together with a mischievelous boyish grin, but he turns back into an adult with a kiss...!? Official English Translations: Coolmic, Pocket Comics, INKR

Saeki Kazuko is an ordinary otaku who has a thing for "two-dimentional shota" but somehow, she is being bothered a lot by a neighbor's child named Aikawa Ryuou, an elementary school boy who looks like a Yankee...

Warm Onee-chan / Attaka Oneechan (あったかおねえちゃん) 2. Promise Me, Onee-chan / Yakusoku Oneechan (やくそくおねえちゃん)Everyone's Big Sister / Minna no Oneechan (みんなのおねえちゃん)♡ Slurpy Sister ♡ / Pero Pero Oneechan (ぺろぺろおねえちゃん)...