I Couldn’t Become a Hero, So I Reluctantly Decided to Get a Job. OVA

Main cast features the protagonist plus several female characters who are romantically interested in them.

Features a character wearing no clothing or exposing intimate body parts.

Prominently features the use of swords in combat.

Prominently features a character who generally retains a cold, blunt and cynical exterior, but once one gets to know them, they have a very warm and loving interior.