Demons Invade, and the Campus Belle and I Pretend to Be a Couple

[System + Romance + One Female Lead + Urban + Superpowers] Demons have descended, Blue Star is facing catastrophe, war rages everywhere, and humanity is in crisis! Su Hao and the campus belle Liu Ruyan are trapped together in a sealed room. But when they step outside, they discover that the place is crawling with monsters. Then Su Hao makes a surprising discovery: as long as he acts lovey-dovey with the campus belle and earns System energy, he can open treasure chests and win rewards! He also discovers that Liu Ruyan possesses the SSS-rank superpower [Grand Age Illusion Song] and has the makings of an empress! Thus begins the story of Su Hao, forced to pretend to be a couple with the campus-belle empress as they date in their everyday lives and save the world together…