Momoiro ShoukougunMomoiro Syndrome; 桃色症候群

Collection of stories: 1) Big Brother is my classmate Hikari became brothers with his classmate Hyuuga through their parent's remarriage. Although he never had much contact with Hyuuga up till then, after they started living together, Hikari sees a side of Hyuuga beyond his imagination. Including his surprising weakness to skinship! After that, Hikari begins to make fun of Hyuuga, but... 2) Pink Syndrome 3) Teasing Suggestion 4) VS the pastry shop across the street 5) The cute rude person 6) Cleanness library 7) Cowardly warmth