I believe this is **singular** "you" because this person is speaking to one person in front of him. corresponds to . ~~ is probably a suffix explainedhere (oh, it's your question)~~. is not common but I sometimes hear /, which means "I" rather than "we".
And this is not " + " but the passive form of . meaning "because of" or "out of" follows a noun that represents an emotion (e.g., , ), but it does not follow a personal noun.
>
> You're being teased by Aoyama!
**EDIT:** Oh, according to this explanation on Wikipedia and , in is etymologically ! Still, as far as I know, it never means plural "we" today.