megumin,kono subarashii sekai ni shukufuku wo!,slime pit, undressing, on back, looking pleasured, tentacles, tentacle sex, tentacle penetration, tentacle in pussy, tentacle in ass, slime (substance), slime, slime tentacles, bondage, consensual tentacles, translucent tentacles, blue tentacles, restrained by tentacles, goo tentacles, , tentacle pit,