I've been trying to search up this manga for the last couple of days, but I've gotten tired of trying to remember the name. XP Can someone please help?

The manga is about a adorable uke that thinks that he is better than his peers and who thinks that sex is unproductive and makes people stupid. After remarking this to one of the seme's friends, he gets caught and raped by the seme. The uke has a stalker who had gone to school with him, since they were children. The stalker fantasizes about assaulting the uke with adult toys, and when he tries to carry out his plan he witnesses the two having sex and secretly watches them from then on, despite the fact that the seme knows about it. In addition, the seme makes the uke attend class with an adult toy stuck in him and gets called up to the board to solve a question, he gets weak-kneed and the teacher asks the stalker to take him to the nurse's office, but the uke refuses and starts calling the seme's name, who pushes the stalker aside and carries off the uke.
The uke had a shota-ish feel and the story takes place at a high school. The uke also wore childish/girly underpants and had a bob-haircut.

Ikujinashi no Spectator by Yamamoto Ataru?

Oh my gosh! Thank you so much!! This was bothering me for so long and now my mind is at ease! You're the best!