Natsu ni Tokeru Himitsu no Koi

Natsugami keeps remembering Aki, the beautiful boy he once met in an abandoned building. He can't forget Aki due to the trauma engendered by witnessing him being violated by someone in that building.

His junior, Miyoshi, confessed to him but he couldn't embark on another journey of feelings because of these memories. In order to face Miyoshi's feelings and his past to unravel more details about Aki, he goes back to that abandoned place, with Miyoshi tailing him.