Kasane Teto In Fortnite Kasane Teto in Fortnite refers to the addition of the UTAU virtual singer Kasane Teto to Fortnite on November 12th, 2026, as the headliner of Fortnite Fest. Kasane Teto in Fortnite refers to the addition of the UTAU virtual singer Kasane Teto to Fortnite on November 12th, 2026, as the headliner of Fortnite Fest.