Power in the Tower

Chris was an ordinary 18-year old boy. He spent his days in high school bored out of his mind, and he spent his time at home sleeping, reading, or getting nagged at by his mom. That is, until, towers start suddenly sprouting throughout the world. Chaos follows, until everyone realizes they have unique abilities that can fight the monsters in the Tower. Can Chris reach the Tower before everyone else? And what's at the top? Real Quick. No harem, and undecided romance.