A young woman from the 21st century with sharp swordsmanship skills finds herself in Honnō-ji during the Sengoku period! Together with a trio of newfound ninja friends, she races through the Underworld beneath Honnō-ji, confronted by enraged corpses at every turn! Nothing can stop this all-female powerhouse team, as the young woman turned samurai slashes up enemies while the ninja wipes them out with their fierce ninjutsu! And when things get tough, activate the Devoted Heart technique to have samurai and ninja lock lips to enhance their abilities! There are so many exhilarating, epic battles to take on! Slay the Demon Lord of the Sengoku period and forge everlasting bonds with your ninja friends!