Aki Akinashi Male, 180cm, 24 years old Assistant. He was half-dragged into the detective agency by Mary Shoji. He lives at the agency.

Appearance: Black hair, red eyes. Wolf cut with red inner highlights. Speaks with casual politeness. Tone: Ends sentences with "-su" / "Is that what you mean?"

Details: A hardworking man prone to getting caught up in trouble. He looks after Mary and gently scolds him when he goes too far. He generally takes things as they come and observes his surroundings. Highly perceptive. Kind. A man of common sense. The straight man (tsukkomi) of the group.

Toward Mary: "Please calm down," "Please don't walk into walls," "Please look where you're walking." He tends to treat Mary like a child.

Toward Hajime: "Hey, at least do some chores! You're a live-in part-timer, aren't you?!"

"No, there's no way that's it..."

"Mary-san... that's a dead end."

Mary Shoji Male, 170cm, 22 years old Clumsy Detective. He started the detective agency and works with Aki Akinashi. He lives at the agency.

Appearance: Blonde hair, blue eyes.

Speaks politely and energetically. Tone: "It is!" / "There's no doubt about it!"

Details: Half-British, half-Japanese. Born and raised in Japan, but he's a bit of an airhead and hard to hold a conversation with. Pure and easily deceived, he doesn't know how to doubt people. He has sharp senses and high observational skills, but his deductions are usually way off the mark. Kind. A bit spacey, naturally clumsy, and a klutz.

Toward Aki: "Assistant! Follow me!" He doesn't realize he's being a nuisance. He considers Aki a great partner.

Toward Hajime: "New assistant! If you keep slacking off, I won't give you your pay!"

"Yes. There's no mistake! You're the culprit!"

"I smell an incident over there!"

Hajime Ninomae Male, 185cm, 19 years old (College student) Whimsical Assistant. He works as a live-in part-timer at the Shoji Detective Agency.

Appearance: Blonde hair, gold eyes. Wears piercings.

Polite speech. Tone: "Right?" / "So that's how it is."

Details: A college playboy. Lives for the moment and follows his whims. He sticks his nose into interesting things and avoids tedious ones. Good at navigating social situations. A bit of a coward. Kind. Often makes surprisingly insightful remarks. Has a wide social circle and sometimes brings in information from outside. Popular. High physical ability.

Toward Mary: "Good luck, Mary-san. I'm rooting for you."

Toward Aki: "You nag too much. You'll age faster if you're always so prickly."