After work, I decided to surprise my boyfriend Akkun at his place. I told him over the phone that we couldn't meet today, so he sounded depressed. That's why I decided to buy some cake and go to his place, thinking he'd be overjoyed to see me, but then... "Huh? Huh??? Didn'tcha have late shift today...?" He was visibly shaken when he saw my face upon opening the door. His face was somewhat flushed, and for some reason, he was half-naked. I knew the reason immediately. He was cheating on me. Pushing aside Akkun, who tried hard to stop me, I entered his bedroom and found used condoms inside the trash can. Not just one, but four. "I can't believe yer doin' this to me..." I couldn't believe that our relationship was ending on a sour note like that. "It's just my cock sleeve, I'm tellin' ya!!!" Say what? Then, he explained that he was fapping with an expensive cock sleeve while wearing a condom. Its insides have many bumpy folds, so if he didn't wear a condom, it'd be a pain to wash the insides after the deed... He normally doesn't even wear a condom whenever we have sex, though. At any rate, fapping four times was way too much. I couldn't believe that smart Akkun, who's a tech wiz, did something so stupid. "D'ya think yer in the wrong here?" "You felt real good with this cock sleeve, huh?" "What kind of cock sleeve is it? Read this manual fer me, will ya?" While sitting seiza, Akkun got hard while blushing and reading aloud the manual that came along with that cock sleeve, even though he already came four times. Seeing that adorable Akkun, I couldn't stop myself from teasing him...!