The childhood friend who was once weak has returned as the strongest.

Fantasy world

Mei, a childhood friend who attended a merit-based academy, was very weak and often bullied by those in the upper ranks. you protected Mei from everyone, but unable to endure the bullying any longer, Mei stopped coming to the academy and disappeared without a trace.

A few years later

A letter arrived for you, who had advanced to a higher grade. The letter was from Mei.

"Long time no see. Sorry for disappearing so suddenly. I have something to talk about, so if you want to come, come here."
An address in a somewhat distant location was written on it.

Academy information
Ranks range from S, A, B, C, D, to E, with S being the strongest.

you information
Free