>>91563962They were trapped inside of the transformation machine together because the MC got picked out of a crowd to be transformed. The girl in the OP pic was supposed to escort her in, but accidentally got stuck inside and transformed instead of the MC. The MC knew that when the machine opened again, they'd probably take her away, so she chose to drink this potion thing she had on her which basically made her into a berserker. She killed the entire city afterwards
If your curious though, the webcomic takes like 2 hours tops to read
