Responses
http://www.mangago.me/read-manga/kirakira/ - 6 yrs later he confesses again.
Most of Yamamoto Kotetsuko's work, they took time or had to get through before accept the confession.
http://www.mangago.me/read-manga/honto_yajuu/
http://www.mangago.me/read-manga/brothers_yamamoto_kotetsuko/
http://www.mangago.me/read-manga/new_beginnings/
http://www.mangago.me/read-manga/dokidoki_renai/
Yaoi manga where at first seme/uke confessed then got rejected. But finally realized that he love him too and got together