Kentaro had a crush on Naru. Originally Keitaro's rival for Narusegawa, he eventually loses all of his money in his pursuit of her. He remained fairly tenacious for a time, but eventually gave up after getting deep into debt with the Hinata Inn. Haruka let him try to work off his debts at a very low rate of pay; from that point on, Kentaro became an occasional background character and plot device. He also tends to make jokes at the stereotype of the anime's genre, and occasionally breaks the fourth wall.