My Plain-looking Fiance Is Secretly Sweet with Me.
[Rouhou] Ore no Iinazuke ni Natta Jimiko, Ie dewa Kawaii shika Nai.Опис
Despite only being in high school, I am being forced to get married due to my parents' circumstances. However, it turns out my partner is the voice actress of my favorite character! A cohabitation story with a voice actress! A new life of just the two of us, it can only be sweet and cute?!
(Source: Kadokawa, translated)