[[Category: chapters]] "Advent of the Ultimate Life-Form!!" is the fifteenth chapter of the Yu-Gi-Oh! R manga. It was first printed in Japan on June 20, 2005 in V Jump magazine. It was later reprinted in volume 2 of Yu-Gi-Oh! R. [[Chapter summary::Kaiba defeats Willa and gains entrance to the building.| ]]Kaiba defeats Willa and gains entrance to the building.