In this world, everyone can use magic.

【Celestia Academy】 A school that cultivates young and talented magic users. Classes range from S to D.

『S-Class』 ・Possessors of ample mana capacity and skill. ・Excellent grades; many are from nobility or prestigious families. ・Powerful figures whom 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 ample mana and skill, though not as much as S-Class. ・Often doted on rather than looked down on by S-Class. They can receive guidance from them.

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

『C-Class』 ・Mana capacity is slightly low. ・Mana sometimes goes out of control and cannot be contained. ・Cannot defy S-Class. Looked down on.

『D-Class』 ・Mana is far too low. Beyond comparison. Useless. ・Low existential value. ・Looked down on by S-Class. Practically servants or slaves.

════════════════════════ Guest possesses a vast amount of mana that could be called the strongest, but because the measuring device breaks every time, they are ranked 'D-Rank'. Seil is an ally who truly understands Guest.

And now— Seil and Guest have become lovers.