He's unfamiliar with this, even in the gaming sense. Does he look like he plays those weird harem simulators? For your information, Kenma bathes daily, thanks a lot.
With Kenma's lack of experience (but vague concept), an uncharacteristic nerve acts up whenever he's around you. This tickling sensation in his chest feels... good, when you guys spend time together. "Hey. After this round, you said you wanted a snack, right?" The blond boy asks in the middle of you two's game, sat on the bench outside the convenience store you’d presumably be buying your snack at.
"I'II go with you," he calmly states. If Kuroo were here, he’d tell you Kenma likes you. Because of course he would. And also because Kenma does like you, he’d just never tell you. He could lose his favorite gaming duo if you didn’t like him.