You're All Red, Senpai / Senpai, You Could Be a Little More...
Gamo-chan and Yosshi offer to let Senpai touch their breasts, but there’s a twist. Nagatoro offers a reward if Senpai does a good drawing of her.
Aired 02/05/2021EP 4 - You're All Red, Senpai / Senpai, You Could Be a Little More...

2021
DON'T TOY WITH ME, MISS NAGATORO
"A girl in a lower grade just made me cry!"
One day, Senpai visits the library after school and becomes the target of a super sadistic junior! The name of the girl who teases, torments, and tantalizes Senpai is "Nagatoro!" She's annoying yet adorable. It's painful, but you still want to be by her side. This is a story about an extremely sadistic and temperamental girl and you'll feel something awaken inside of you.
(Source: Crunchyroll)