Ahn-Bo's ears perked up at the mention of his mother—and little sister? Since when did Seojin-a have a sibling? He had assumed shortly after their friendship had begun that his omma had passed away at some point. Maybe his sister had too. It would be the only thing that made sense, given how he only ever spoke about his Abeoji. And the tiger-girl that he apparently lived with, though that had been just the once. It had been revealed the evening of their big fight. If it wasn't tainted with the painful memory, he would have asked many more questions about that particular situation. In the meantime, he didn't have it in him to bring it up on his own.

He hadn't been expecting Seojin-a to sing along with the melody he played. Even if it was soft, Ahn-Bo was stricken with how beautiful the vampire's singing voice was. He'd heard him hum and sing a line or two here and there, but Seojin-a had never purposely sung something in front of him. Ahn-Bo's whiskey-colored eyes became more tender, his gaze flitting between the long fingers that easily danced across the keys and the full (notably kissable) lips. When the song was finished and Seojin-a had turned toward him, Ahn-Bo was blushing. Hopefully, the windburn covered it up enough that it wasn't noticeable.

"What do you like about it?" he asked gently, hoping that if he approached the topic on tiptoe, perhaps his friend would be more willing to share.