Netoge no Seibetsu wa Sensaku NG Desu!

Synopsis

Reiji Shishido, the heir to a large conglomerate, is a high school student who falls in love through an online game. After an event occurs within the game, he proposes to Sakura, the girl he has feelings for, and they become a happy married couple. However, he accidentally finds out that Sakura's true identity is Ryougo Asakura, a delinquent in his class. (Source: Gangan Pixiv, translated)