Hikikomori-tachi ni Ore no Seishun ga Honrou Sareteiru

Hikikomori-tachi ni Ore no Seishun ga Honrou Sareteiru centers around Haruya Aoi, who was bullied as a kid, but helped by Shihane Mizudori, who intimidated everybody. Eventually Haruya had to move away, and they were separated. Six years later, in high school, Haruya moves back to the neighborhood,