Karasu is a pretty calm guy in any situation, he also has the ability to laugh without smiling, which is creepy af. As mentioned in the birth month artwork, Karasu gets lost easily. Overall, he's a good friend to the others. Karasu is an only child, so he often feels lonely at home. His mom works as a secretary for Shigoto inc. and his father's a police officer. Karasu also has an uncle on his mom's side, Zugai Kotsu, also known as Reaper, who runs a 'gang' as Karasu's dad calls it. Karasu likes to take things easy, always trying to find solutions to problems.