Other Name: 夜空のすみっこで、; Yozora no Sumikko de
Author: Hayakawa Nojiko ,
Year of release: 2014
When a former senpai of his comes back into his life after 11 years, Hoshino is surprised. He becomes confused and slightly terrified after the senpai finds out that Hoshino has kept a pen that he gave him after all these years, and then kisses Hoshino.