The Seventh Front

A 13-year-old middle school student accidentally travels to another world. Without the help of a system, he gradually levels up from a novice. 'Please form a contract with me!' Join a faction, choose an identity. 'I will save you!' Repeated cycles, just to make up for the past. 'We are teammates, and also friends!' Under the apocalypse, you cannot fight alone. — Description from novelcodex.org