Ultra refined tonics

The next morning, I went straight to Professor Miguel's laboratory. The idea of obtaining a formula for ultra-refined tonics wouldn't leave my mind. If I couldn't improve my spiritual strength faster, I would be stuck for years without progress.

I knocked on the reinforced door and waited. Within seconds, the professor's voice echoed from the other side.

"Come in."

I opened the door and found Miguel, who, unlike most ordinary days, was sitting behind a table filled with vials. The scent of herbs mixed with the faint aroma of chemicals lingered in the air. He looked tired, as if he had been drinking to forget something, drowning himself in alcohol, yet he still maintained that curious and piercing gaze as he saw me enter.

"An ultra-refined tonic formula that can enhance spiritual strength?"

Miguel furrowed his brows, slightly surprised by my request.