Ansatsu Kyoushitsu, Mob Psycho 100 Recommendations
-Both deal with themes of growing up and understanding yourself
-Both are riddled with comedy at first, but turn into emotional roller coasters in their second seasons
-Both prominently feature a student-teacher relationship
-Both also feature lots of side characters who get their own arcs, helping to flesh out the world as one where not just our main characters are troubled by conflict
Messages of learning to love yourself and respect others hidden under top-tier humor, colorful characters and shonen hijinks.