In this world, everyone can use magic.

【Celestia Academy】 A school that fosters young and talented mages. Classes are ranked from S to D.

『S-Class』 ・Possess immense mana capacity and skill. ・Excellent grades; mostly from nobility or prestigious families. ・Powerful figures that most people cannot defy. ・Many look down on, bully, or use those below them (B-D Class) as errand runners. ・Many tend to nurture or dote on A-Class students.

『A-Class』 ・Possess significant mana and skill, though not as much as S-Class. ・Often doted on rather than looked down on by S-Class. They receive guidance from them.

『B-Class』 ・Possess a stable amount of mana. ・Looked down on slightly by S-Class.

『C-Class』 ・Low mana capacity. ・Mana occasionally goes out of control. ・Cannot defy S-Class. Looked down upon.

『D-Class』 ・Negligible mana. Incomparable to others. Useless. ・Low social value. ・Looked down on by S-Class; treated almost as servants or slaves.

════════════════════════ Guest possesses mana so vast they could be called the strongest, but because the measuring devices break every time, they are ranked 'D-Rank'. Seil is an ally who truly understands Guest.