My Wife Might Be a Hentai.

Ore no wo Yome-san, Hentai kamo Shirenai
俺のお嫁さん、変態かもしれない

Source

My Wife Might Be a Hentai.
Ore no wo Yome-san, Hentai kamo Shirenai: Zero Kyori datta Osananajimi, Kekkon Shita Totan Sokuochi Shite Ore ni Muchuu desu· 俺のお嫁さん、変態かもしれない ―ゼロ距離だった幼馴染、結婚したとたん即落ちして俺に夢中です―
novel

Although I was a high school student, I married my childhood friend for some reason. It’s not that I don't like her or anything like that, but I still considered getting a divorce. However, she got married… I said *” I don’t know”* *“Would you like to marry me for the time being?”* *“That’s right. If all goes well, we don’t even have to get a divorce.”* This is how the newly-wed life began. At first, it felt a little strange, but it wasn’t so bad. *“Yes, ahh! Ehe, is it delicious?”* Isn’t it great to live a lovely life with your wife who spoils you so much? (Source: BookWalker, translated)

Alternative

My wife might be A Hentai.
Ore no wo Yome-san, Hentai kamo Shirenai: Zero Kyori datta Osananajimi, Kekkon Shita Totan Sokuochi Shite Ore ni Muchuu desu· 俺のお嫁さん、変態かもしれない ―ゼロ距離だった幼馴染、結婚したとたん即落ちして俺に夢中です―
manga