A young silver-haired male with mismatched eyes smirked as he strummed his fingers rapidly against the strings of his guitar, producing a soulful rock number.
Meanwhile, another male, with blue-hued hair was sat on a chair with his hand under his chin, intently listening to the song being produced.
After a few seconds, the silver-haired male strummed his final note and let out a small gasp as he felt the vibrations of his guitar through his fingers.
"These vibrations... so... intense."
The younger blue-haired male tilted his head to the side as he spoke with a gentle tone.
"It seems that your overall rhythm and pitch have improved by 98.6%."
The silver-haired male made a small grunting sound as he turned to the blue-haired male and smirked.
"It is to be expected from my guitar... I adjusted it recently so now the music I produce from it will be superior!"
Ai shook his head slightly and tilted his head to the side, giving him a somewhat stern expression.
"You must strive for cont