A smol bunny boy named Usaru.
I'm sorry I just can't agree with your saying the original anime has the best and least toxic relationships of UsaRu (Of course you're entitled to your opinion). I wouldn't say Crystal has the best, of course. I've never been big on the two. I kinda liked them in the manga, but tbh my fav is SeiGi (anime, not manga). He's a pedophile if we'r e being honest. And a rude, cold, horrible pedophile, at that.