There's Nothing Wrong with Me - Vol. 1 Ch. 7 - Shaking Hands with You at the Rice Bowl Place 1

[MangaDex]

 

[saveme]

The "I can fix her" guy

 

[BakedBanana]

"A Twisted Teacher who Gave his Students Drugs" (Page 5)

I gotta say, this manga got some dry sense of humor with its execution of scenes.