Drunk on You.

After gaining admission to Han University in Seoul, Yunho is sent to live with his brother, Yunsoo, and his wife, Yoosun. But when he walks on his sexy sister-in-law breastfeeding, he is unable to shake the image from his mind. Coupled with the knowledge that Yunsoo can't satisfy her carnal desires, Yunho is torn between his duty as a younger brother and his hunger for Yoosun as a red-blooded man. But when he becomes the object of the campus bombshell's desire, it might be just what he needs to serve as a distraction…

Original Webtoon:
Lezhin, Bomtoon, MrBlue, Naver Series, Toomics

Official Translations:
English: LezhinUS, LezhinX, Toomics, HoneyToon
Others: French, Thai, Japanese, S.Chinese, T.Chinese, Spanish, Italian, B.Portuguese