The S-Tier Slut Stats of a Girl Too Plain to Join the Hero's No-Romance Party

After getting wiped out in the Milking Dungeon, the Master Hero and the S-tier slut Susu are now in a relationship. Unfortunately for them, their guild doesn't allow in-party dating! They'll have to keep their affair on the downlow with sneaky blowjobs in the storage cellar, hidden handjobs while eating in the dining hall, and grinding sessions in the back of a moving carriage. But can the hero keep his silence as Susu jumps into his rickety bed with his fellow adventurers right next to him!?