Apocalypse: Different-Colored Eyes

One-line blurb:

Heroine: After I was apparently scammed, I awakened unusual eyes and set off on a journey to fight monsters and collect a handsome-men encyclopedia.

The men, in order of appearance:

Male Lead 1: Who else gets it? My girlfriend has disappeared.

Male Lead 2: The Green-Tea Boy’s Handbook for Self-Cultivation

Male Lead 3: How to Win Back Your Wife: Let a Puppy-Like Boy Tell You