Bloody Steam

Kumori Ichigami witnesses a steel vampire attack on his way to school. When that same killer, who happens to be a very cute girl named Miko Migasane, joins his class as a new student. his life is turned upside down. When Ichigami is attacked by his teacher, who also happens to be a steel vampire, Migasane saves him. With the blood draining from Ichigami’s broken body, he has one choice to make: die or become a steel vampire himself! This endless struggle between monsters is about to begin and Ichigami is not who he thinks he is…he is much, much more…

Source: Mangamo