Mistake

Kana and Arya see something they shouldn’t have while studying for their school’s mathematics competition... They catch their classmate, Melinda, and the headmaster’s son, Nico, recording an intimate encounter in the library. Nico sees the voyeuristic pair and puts Kana and Arya’s names on the video when he uploads it. When the video goes viral, Kana and Arya are forced into a reputation-saving marriage. It’ll be tough adjusting to their new lives as a married couple, but hopefully they have what it takes to learn to love one another.

Original Webtoon

Official Translations:
English

Artist's:
Ch 1\191: Cindychwa
Ch 192\252 : Matchwa.