Following <Nexio> and <Zello>, writer Yoo-ho Jeon's hot new work!! <Unbreakable Master> Update every Thursday!! Young Na-ru, who has a fragile constitution, is shaken by the news of her ex-girlfriend during a freshman reception, and the glass in her hand breaks. Young Na-ru, who comes out to regain his composure, encounters a super-phenomena man in a twisted space... The brilliant action fantasy of writer Jeon Yoo-ho, who presents a unique world, unfolds!!