Seven Days to Kill: All the People Beg Me Not to Upgrade!

The apocalypse is coming, and the seven-day killing upgrade system for everyone is activated. Only Gaoyang has an additional system! "I became a teammate with a beautiful girl who was a game sparring partner with a childlike face." Ding! 10X experience system is activated First upgrade your level to the top of the rankings. Bite! Since list 1 exceeds level 10, the health of zombies below level 10 will be increased by 3 times. "Yesterday I killed a zombie with 10 blows, but today I have to kill it 30 times." "Zombies are becoming more and more deadly now. Number 1 doesn't want to leave us a way to survive!" "Gao Yang, I beg you not to upgrade!" ... Gao Yang smiled: "It's none of my business!" Then team up with a beautiful woman who loves running. Bite! Parkour system is on I'm confused, it turns out that opening additional systems is related to the profession of the girls in the team. Holy crap! The more girls I have in my team, the stronger I am. This is so cool. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.