The main character wants to be bullied, but hates it at the same time. He calls the one girl who has tried to help him regularly a "bystander" despite the fact she can't do anything if he isn't going to.
The kingdom scores, what, 29/30 heroes and only one's a dud? Sweet, send him to the village to live like a regular per—oh, hate him and randomly teleport him somewhere while shouting obscenities and expecting him to die? What if that random teleport includes the princess' room? Ever think about that?
And how did an entire class get teleported when the main character wasn't in the room with them? He's dead on the sidewalk and you expect me to believe he reincarnates in the same teleportation? What about the rest of the school? What about his dead and broken teenage body? Wouldn't he have to be born into the world as a baby to not be dead? And surely it can't just be one class since there was several classrooms between him and the class that got teleported... oh, it is?
And RPG mechanics, I'm sure those are going to be utilized to some degree of—oh, they don't matter since the main character is overpowered because he gets teleported to a room that gives him all he needs to survive.
And he's a healer so there going to be healer stuff, right? Oh, the magical macguffin made it a reverse healing thing? I guess the title calling him a healer is lying.
Look, I'm not saying trash like this can't be enjoyed by someone. I never do. But I am saying this story is trash and the author is either phoning it in or a complete moron. And the publisher that picked this up isn't any smarter.
Literally nothing makes sense, and as deadphoenix said, the main character goes from being a willing victim who denied people who wanted to help him to swearing violent revenge against everyone carte blanche. He just doesn't make sense.
Chapter 1 has broken my suspension of disbelief, so all that's left to do is stop reading it or treat it as a sarcastic parody.
And the the story changes at chapter 5. It improves, though there are still a lot of poorly written things. Honestly, it's kind of crazy how much it changes. Hence why I'm rating it higher than a 2.