I'm sorry but the seme is so toxic. He's obsessed and manipulative. I've read the raws and I don't think he changed (not that it would make him more likeable because of what he's already done). Uke is pitiful. Their relationship is definitely not healthy at all. I would understand if this manga is psychological in genre but it seems as though the author is trying to portray their relationship as romantic.
The author's talent when it comes to conveying the story through his/her drawings is on another level. He/she draws the movements or motions of the characters in a way that is easy to be understood by the readers. Not to mention how the characters' expressions, especially their eyes and lips, project so much emotions. Such talent.
Togura, you're not all that. You belong to the trash.