KageHina's manga / #Double Stories(1)

Ch. 1-4 +5.5 Mao x Oka , Kadoi x Hazumoto - Sawada, Oka, Hazumoto and Kadoi are friends in the same high school but are in different departments. Oka and Kadoi are in the engineering department while Sawada and Hazumoto are in the normal school track. While they were eating lunch together, Kadoi announced that he and Hazumoto have been going out for a while now. One day, Mao and Oka overheard Kadoi and Oka having sex.... Ch. 5 Masaki x Keito Masaki got reunited with his ex neighbor and childhood Friend, Keito, after he moved out from their house 7 years ago. - ISTG MASAKI IS THE LONG LOST BROTHER OF SAKUSA