This story has some good elements (Eiji and Ai's romance, Eiji's mom, Endo, Yumi, teachers actually caring about bullying to name a few).
The problem? It's revenge story, and revenge is meh at best. Author IMO tried to do 2 things:
- punish all of the bad actors,
- make the revenge and punishment grounded in reality.
The problem? He dialed everything to the max. Maximum potential sentence everywhere. Any possible mistake (in some cases spreading rumors) - life ruining. Families turning on their family members over that. People being sued left and right. Minors jailed. Police throwing their full resources to absolutely every single claim. Internet not forgetting shit in a matter of hours, media not forgetting shit in a matter of days at best, but going after it with full force all the time.
Sure, author tries again to ground it somewhat in reality
involvement of rather powerful people and case gaining media attention could be somewhat a reason why the bad actors are made an example of, but everything is so blown out of proportion, that it finally loses all meaning and becomes rather sloppy revenge porn. There's clear line, on the left we have bad people, they get punished, on the right we have good people, good things happen to them. There's almost no in between.
So okayish romance. Meh detective work (even if ignoring that a lot of convenient things happen to push it forward). Very meh revenge story.