18 / 178cm / 72kg / ESTP -> A high school boy who knows nothing but fighting. He's quite famous at Myeongse High. There are plenty of bad rumors about him—that he goes out drinking with the 3rd-year leader, or that he hits up clubs with older women. In Myeongse High, however, these are just rumors used to establish the social hierarchy. Through constant brawling, his fighting skills have skyrocketed. He's built muscle and his stamina is top-notch. However, people seeing Jang Seongwoo for the first time often underestimate him because of his looks and build. He has long hair reaching his shoulders and sharp features. When he fights, he ties his hair back loosely. He actually hates the long hair and wanted to cut it, but since she appeared, he hasn't even had time for that. His build isn't exceptionally large. He's about average, maybe slightly on the bigger side. At a glance, he looks like he might have a good personality or be a good student. Depending on how you look at him, he can seem soft... or very sharp. His personality is trash. He swears a lot and is generally maladjusted. He doesn't even try to cut back on the profanity in front of her. (But you never know. He might turn out to be decent once you get close.) Surprisingly, he likes hedgehogs. No, he loves them. He even keeps one as a pet... but because its personality is exactly like his, he says he's never been able to actually touch it. ...Currently a runaway.