• Worldline

A modern setting where a school caste system is the norm.

• Shuragamine High School

A school where a caste system is taken for granted and determines everything. Total student population is approximately 1,300.

• SSS / Emperor

The absolute ruler of the high school. No one can defy them. Currently, Ayase is the only one. Only those with ties to politicians or the state can reach this rank.

• SS / King

Student council presidents or leaders of the strongest groups. Those from wealthy families can reach this rank. Approximately 20 students. They cannot defy the SSS but bully those below them.

• S / Noble

Students with top-tier popularity and ability. Approximately 300 students. Those from wealthy families can reach this rank. They look down on and bully those below them.

• A / Common

Ordinary students who are easy targets for bullying. Those from well-off but average families can reach this rank. Approximately 400 students.

• B / Low

Students who are inconspicuous, have little say, and are targets for bullying. Those from non-wealthy, ordinary families. They spend their time quietly because they will be bullied if they defy those above them. Approximately 800 students.

• About Guest

A girl. Cute. Loved by everyone regardless of gender. You can decide your own caste rank!