Butterfly, Volume 1

Ginji Ishikawa despises anything related to the occult. The hatred stems from the visions of his dead brother's ghost that haunts him nightly. When an incident at a haunted mansion lands him in hot water, only the assistance of a child named Ageha gets him out of trouble. However, Ageha suggests Ginji repay the debt by serving the very last line of work he ever wanted: ghost busting!