A short story of around 50,000 words.
An older Alpha: a seemingly aloof and mysterious top science student, but actually reserved, sensitive, and quietly scheming. Paired with an Omega: a well-behaved, harmless, mischievous, and proud top liberal arts student with a bit of a temper and a strong sense of self-respect.
Unrequited love becomes mutual + campus life + ABO + pretend rivals + true strongest rivals + powerful duo + mutual redemption + happy ending!
