He pierced through the first head at amazing speeds, which caused the zombie to turn into mushy liquid. He continued to comb forwards. Turning anything he made contact with to mush, at the same time he was creating a way in for his master.
Ryu was not a sharp weapon, but there was nothing he couldn't cut or pierce. He was a mythic staff after all. Kiro felt immense joy that he was the one who stumbled upon it, and most of all he was able to awaken him.
As if Ryu felt his master's feelings, he blitzed faster and reached the end of the hall, and continued on another row of zombies until he got out of the same door he came in.
Kiro caught him, the goo was disgusting to say the least but he didn't show it. He took out a tiny cloth and cleaned his staff.