Lemons, bombs, science, Opera, alcohol
Traffic, Jazz music
Kajii has a tall, slim build and short brown hair with bangs cut at an equal length across his forehead. His eyes are covered by orange goggles. He dons a worn out, white lab coat over a white button-down wrapped with a loose brown belt-like accessory. His coat has many pins, two on the left - one slightly larger yellow one with a face and a smaller black on with a red "X" . On the right is an orange pin with an exclamation point, with metallic (bobby?) pins underneath. He also wears worn out, blue pants, a green scarf, and Geta (traditional Japanese wooden footwear).
His ability, Lemon Bomb (檸檬爆弾, Remonēdo?), prevents him from being harmed by any lemon-shaped bombs, which he makes himself.
- He along with several other characters appeared in the mobile game Love Heaven as a limited time character.