Bahiyyih has just debuted in Kep1er and is busy navigating her packed schedules filled with dance practices, vocal training, music shows - you name it. And so she often relies on her brother, who is part of the world famous group TXT, for advice. But what happens when she gets some unexpected help from the other members of TXT as well? And how does Kai feel about his sister debuting, among... other things? [a bahiyyih x txt - brother's best friend-esque au]