My Monster Secret

My Monster Secret, known in Japan as Actually, I am... (実は私は Jitsu wa Watashi wa,?), is a Japanese manga series written and illustrated by Eiji Masuda. It has been serialized in Akita Shoten's shōnen manga magazine Weekly Shōnen Champion since January 31, 2013. As of April 2016, the series has been collected in 16 tankōbon volumes. An anime television series adaptation began airing July 2015. AnimeLab has secured streaming rights in Australia & New Zealand. Seven Seas Manga acquired the rights to translate and distribute the manga for North America with the first volume being released in January 2016.

Plot
Meet Kuromine Asahi, "the man who can't lie". On the way home, he just learned an important secret. That his crush, Shiragami Youko, is actually a vampire! Can Asahi actually keep her secret?