Ok I explain
First pic is Psyche and second pic is Tsugaru. (names came from fandom)
Originally Posted by copypasta from DA
They're basically alter-egos of Izaya & Shizuo, respectively -- their designs are based on cover art from OST/character song albums and their personalities are fan-developed (opposite personalities of their respective originals). Psyche is cute and innocent (compared to Izaya who's basically a scheming troll) while Tsugaru is calm and quiet (compared to Shizuo who's mad all the time and destructive).
THEN THERE IS
Fandom calls first pic Delic and second pic Hibiya. Delic is cover art from OST 2 and Hibiya is cover art from Izaya's cover song. Fandom gave Delic a playboy personality and Hibiya is still sorta undecided but right now he's the stubborn/haughty/tsundere type. idk.
SO YEAH. Besides Shizuo/Izaya, fandom ships Tsugaru/Psyche and Delic/Hibiya (and Delic/Psyche since they're OST buddies). FUJOSHI WORLD IS CRAZY WORLD FORREALZ.