Douluo: New System Every Month, Starting by Tricking Tang San

[Abuse Tang San, Abuse Yu Xiaogang!] Gu Xian transmigrates into the Douluo Continent with the worst possible start. And guess what? He lives right next door to Tang San! Just when things look bleak, he awakens the Infinite Random System. [Each month, a new system is randomly assigned to the host.] [The system lasts one month, then a new random selection begins automatically.] [First system: Demon Contract System!] [The host can choose any item to sign a contract with a demon, earning corresponding rewards upon success.] [Newbie Mission: Sign a contract between Tang San and a demon!] Gu Xian is…