Ending explanation: So at the end, it reveals that even though Todou's friends called him Monkey this and that they actually thought of him better than Todou expected. Like his guy friends seem to know about his small *nemo* problem and were saying it's fine since every guy has some kind of complex. The girls actually liked him and thought he was cool. So when Yamamoto heard about it, he took advantage of the problem and approached Todou. The razor at the end gives you the clue that he actually shaved to have no pubic hair not that he actually he has any problem. (not too sure that it's his or Toudou's hair since it's light color but for my interpretation, let's say it's his). And about the book that the delinquent holds at the end was actually romance game strategy or something like that. Personally, I felt kinda bad for Todou for not knowing this, but I love twisted stories. ( ° ʖ °) He just got played right into seme's hands.
Ending explanation: So at the end, it reveals that even though Todou's friends called him Monkey this and that they actually thought of him better than Todou expected. Like his guy friends seem to know about his small *nemo* problem and were saying it's fine since every guy has some kind of complex. The girls actually liked him and thought he was cool. So when Yamamoto heard about it, he took advantage of the problem and approached Todou. The razor at the end gives you the clue that he actually shaved to have no pubic hair not that he actually he has any problem. (not too sure that it's his or Toudou's hair since it's light color but for my interpretation, let's say it's his). And about the book that the delinquent holds at the end was actually romance game strategy or something like that. Personally, I felt kinda bad for Todou for not knowing this, but I love twisted stories. ( ° ʖ °) He just got played right into seme's hands.