Yi Kou Chi Ge Tu

In a world of animal-people, Mu Wei, a lion who was the big man on campus, fell in love with the rabbit, Bai Li. Mu Wei usually has an intimidating air in school, but whenever he sees Bai Li, he becomes a big pussy cat. And as he became more familiar with the lion, the normally timid Bai Li gradually opened his heart, too...... A fluffy school romance, so sweet you'll get a toothache!

(Source: Kuaikan, translated)