They say enemies meet in the reserves. The two met in the bathroom of the training camp. Yong-Taek apologizes to Woo-Chang for what happened between them in school, but Woo-Chang mocks him by bringing up his mother, and ends up getting hit with Yong-Taek's 'love whip'... "Woo-Chang, I never hated you. It's just that the 'love whip' has become stronger..."(Source: Lezhin, translated)