Today, Fate meets its end. The fierce foe Majin Saber appears! Kohaku-san and the other Type-Moon friends are excited for the promotional competition "Type-Moon Tenkaichi Budokai" where powerful characters form tag-teams and battled it out! However, a conspiracy is brewing behind the scenes... and a new character designed by Takeuchi Takashi appears!! (Fourth Volume of Koha-Ace, following Koha-Ace EX)