If you're looking for anime similar to Karisome no Keiyaku: Kyuuketsuki no Henai, Kishi no Shuuai (Light Novel), you might like these titles.
The official music video for Ai ga Tarinai yo from the album S.O.N.O.M, by SONOMI
The official music video for Vector Fish from the mini-album melon, by THE BINARY.