Kirin Toudou from Gakusen Toshi AsteriskShe is NOT a loli (unless you're referring to the same "kind" like Hestia from DanMachi)...
Anyway, I have way too many to pick from, though the first three that come to mind are Aisaka Taiga (Toradora!), Kinomoto Sakura (Cardcaptor Sakura), and Minato Tomoka (Ro-Kyu-Bu!).
(P.S. Cardcaptor Sakura is getting another manga!)