Some virgin kid who claims to be part lion
Adhu A. is a lion when it comes to talking to freshman girls
It literally means, "That's right." But it is commonly used as a universal reply - usually coupled with an emoji appropriate to the context - when you do not know what to respond to the information you just received.
U1: Yov, mone. Enakku kannu therla yaa
Pa1: Adhu seri 🥲