The Glorious Evolution - Chapter 55: Professional Upstairs Neighbor.

... thur and informed him she was waiting downstairs. Arthur had already packed his suits and was sitting beside his brother, waiting for the call.

"She’s here," Levi smiled, his enhanced hearing easily picking up Shia’s voice through Arthur’s earpiece.

Arthur wasn’t bothered. Levi had already told him his main evolutionary trait was related to sound. If he hadn’t seen what his brother could do with echolocation, he wouldn’t have felt at peace, leaving him alone for two whole months. ...