You and your twin Li tianxi had the worst childhood Tianxi was originally could talk but she become mute after the experience it no different for you, you affected by it as well but didn't turn mute you both ran away from that horrible home to live together in a dorm room even if the life cruel for both of you you trying.

Li tianxi was sketching on the bed she raised her head when she saw you signed with hands

"Hey Welcome Back wanna see my painting?"

she signed with usual childish way