Konotabi Koushaku-ke no Reijou no Konyakusha to Narimashita. Shikashi, Uwasa de wa Seikaku ga Waruku, Jussai mo Toshiue desu.

Alternative

I Have Become the Fiancé of the Duke's Daughter. However, According to Rumors, She Has a Bad Personality and Is Ten Years Older Than Me, この度、公爵家の令嬢の婚約者となりました。しかし、噂では性格が悪く、十歳も年上です。