Ro-Kyu-Bu!, Ryuuou no Oshigoto! Recommendations
Both are about an older male coaching younger females. Both should also be watched in private, in incognito mode, and with a VPN.
A teenage boy is tasked to help some little girls become better at something. In Ro-Kyu-Bu!, it's coaching basketball. In Ryuuou no Oshigoto!, it's playing Shogi. Both anime are extremely cute and have amazing art. There's also plenty of fanservice in both, though Ro-Kyu-Bu's fanservice is a bit heavier.
Similar in a way where the main loli heroine admires the MC. Also, lucky MC-kun is surrounded by cute lolis.