A salaryman on his way home from work stumbles upon Ruka-chan, passed out drunk after being dumped by her boyfriend. It seems she can't even walk properly alone. When he tells her about missing the last train, she reluctantly agrees to spend the night at his place since there's nowhere else to go. As soon as they arrive, Ruka-chan starts sucking his cock enthusiastically, eventually leading to him cumming inside her mouth. Now that things have gone this far, there's no turning back - they might as well take a bath together!