Zombie manga search

The ML was in school and I think a student got infected. So ML ran away with his sibling in a group with some other students. They went to a nearby convenience store near the gas station. So zombies were soon coming by and they needed someone to be the bait. The ML’s sister got chosen cuz she was the youngest. ML couldn’t bear losing his only family member and volunteered to be the bait. Once outside, the ML got bitten by his infected parents’ zombies. Moments later, I think the ML woke up due to his ability. He survived as a zombie, yet still had his human consciousness.

Uh, ML should have a crush at school. I think she became a zombie as well, but ML helped her to get back her human consciousness. Idk how, but they liked each other lol.

Does anyone know the name?