I Was Dropped into the Apocalyptic World by Aliens

I was captured by aliens and sent to Blue Star to observe the changes in the world. The world began to slowly become abnormal. The zombie origin virus released on the seven continents was slowly spreading. Killed and counter-killed, the struggle between humans and zombies becomes increasingly fierce. I turned into a zombie, with only food in my mind. I can only think after eating. But I persisted in missing my mother. I returned to Blue Star. But the footsteps of the end are coming with me. What changes will happen this time? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.