Rika

You are reading Rika manga, one of the most popular manga covering in Ecchi, Romance, School life, Seinen genres, written by Miyano Tomochika at MangaBuddy, a top manga site to offering for read manga online free. Rika has 16 translated chapters and translations of other chapters are in progress. Lets enjoy.
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From FairGame (JCafe24):It's about a boy named Nishizawa Kazuya who is in 2nd year of middle school. Unlike his younger sister, Rika, he is good at a lot of things. He is also the fastest runner in the school. His parents and other people think that he is a responsible and hard working child. He seems like a perfectly good child but he has a secret that he can't tell anyone. Every day he enjoys peeking at his sister changing clothes.