>>2626122Dust - the closest thing Kazuma has to a normal friend and one of the few characters Kazuma doesn't hold utter contempt for (unlike his party members). Dust also has two attractive male party members, Taylor and Keith.
Vanir - demon with huge interest in the normal world and regularly works with Kazuma to replicate items and appliances from Japan. A scenario where he makes sex toys and trests them on Kazuma would work.
Kyouya - foil to Kazuma, dashing hero type. Hatefuck scenario.