Seraph of the End - Vol. 1 Ch. 3 - The Demon That Dwells In Your Heart

[MangaDex]

 

[GrimThoughts]

What the hell, that took a twist. So the high school is a laboratory, and his friend turned into a vampire? I’m liking this manga more and more

 

[PsyMonk]

I really wish I started this sooner oh well atleast it's still on going.