Akujiki

This is a heartwarming boy's manga that has been serialized in Kadokawa Kero Kero Ace since 2009, and only 1 volume of 4 out of 20 stories has been made into a book. Like a commercial book, it has a color cover and color pages.
• Synopsis -
Humans whose shadows are eaten by monsters called bait demons die.
However, there were some who absorbed power and gained superhuman abilities.
That is "Akujiki".
Taiga, the main character who awakens after being attacked by a bait demon, is faced with a series of trials!