Doomsday: Sign in to Become Stronger and Build a Shelter

Su Xiu traveled to a parallel world where the end of the world had just begun. I awakened to the Doomsday Survival System and signed in to copy skills on the first day. Although I don't have powers, what's yours is mine. You can become stronger by killing monsters. Are you still worried about being infected by zombies accidentally? I'll just add points, and you won't be able to break through the defense! Are you still feeling jealous because your abilities are not as good as others? Sorry, I can strengthen my skills. Today I copy your ability. Even if I use the same ability tomorrow, you are far from my opponent. Hey, what about surviving the apocalypse you promised? Sister Yu begs me, the teacher falls in love with me, and my sister can't live without me. I have no choice but to build a shelter for fun?