 If you liked
Onanie Master Kurosawa
|
 ...then you might like
Koi dano Ai dano
|
Both manga's protagonists act as somewhat outsiders, who reluctantly involve themselves with their classes. They also deduce factors, influences and relationships within the class.
Each main character is analytical and acts somewhat superior to the rest of the class. However koi dano ai dano is shoujo and is a much more lighter and more comedic read than Onanie Master Kurosawa. If looking for similar main characters try this one on.