Rin, a married woman who has been in a sexless relationship for a long time, has a body that craves something rod-like. Before she knows it, she's licking... Since the day her frustration exploded, she has been sucking random men's dicks in the library, toilets, locker rooms, classrooms, work, and trains. She wriggles it in her mouth as much as she can, and after releasing a lot of saliva, she licks his whole body! The desire to lick and give a blowjob continues to grow...