Osanakatta Kimi kara no Kokuhaku wa, Jikou desu ka?

During his youth, Usawa Itsuki often took care of Kameyama Yui, Itsuki's neighbor and several years his junior. When she was in elementary school, Yui declared she would become Itsuki's bride. Years pass, and when they meet again, Itsuki turns out to be a teacher at Yui's high school. Will their relationship develop into something more than just neighbors? Note: Originally published as a doujin, later sold as ebook chapters by Otometika Shuppan from July 13, 2018 to October 19, 2018. 1) Sou Ieba sa (そういえばさ); COMITIA 113 2) Sonna Koto yori (そんなことより); COMITIA 114 3) Naranakya Yokatta (ならなきゃよかった); COMITIA 116 4) Ice Ice (ICEICE); COMITIA 117 5) Konna Hazu dewa Nakatta noni (こんなはずではなかったのに); COMITIA 120