In order to be accepted at a school with high academic standards, Masato has to take lessons from his "big sister" cousin who is too sexy for him! Can he overcome her temptation and concentrate on his studies? The heart-pounding study session begins under one roof!
Itoko no Oneechan ni wa Natsukanai! is a completed manga by Igarashi Kyouhei, first published in 2023. It blends romance and comedy. You can read all 1 available chapters of Itoko no Oneechan ni wa Natsukanai! online for free on MangaPulse; the newest is Chapter ?, added 2023-09-29. The series is finished, so you can read it from start to end in one go.