 If you liked
Zankoku na Kami ga Shihai suru
|
 ...then you might like
Thomas no Shinzou
|
Apart from sharing a similar old-shoujo like art style, what makes both these manga similar is how well both explore the thought processes and mental breakdowns of young boys who suffer from guilt, trauma from death and abuse, and loving people of the same sex. Both also have exceptionally well written characters for their genre, and if you enjoyed one, you're sure to enjoy the other.