Doomsday Game: Strengthen My Brother at the Beginning?

The heroine is not necessarily human + semi-data flow + gradual and decisive killing + a bit dark Lu Yan traveled through time for two and a half years, and also waited for the system for two and a half years. He thought that the system would not wake up. When he ushered in the doomsday game, the late system also woke up. After awakening to the system, he gained a 'strengthening' talent that could strengthen anything. When he obtained the 'strengthening' talent, the first thing he did was lower his head and look at his... Brother! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.