agree,, she should tell junpei about it
Absolutely, Azu should tell Junpei about her own mistake and now she understands what he was feeling at the time he made his mistake with Rina. Keeping it secret will only make things worse between them later on when he finds out, and believe me, he will find out at some point even is she doesn't tell him herself. I have a bad feeling that Kuroi is not going to let go of her so easily and will pop back into her life again.
Only together can they get past this! (︶︿︶)
azu is a strong woman that realized the mistake she was about to do . i just hope she won't hide this from junpei, if they should stay honest with each other no matter what (๑•ㅂ•)و✧