During Mahora's cultural festival, Negi manages to partake in simultaneous events thanks to his student Chao Lingshen's latest invention, the time machine "Casseopeia". One of these events is the "Mahora Martial Arts Tournament" where he confronts a series of increasingly stronger enemies including a former member of "Ala Rubra" (Crimson Wing), a legendary brigade led by his father. After the tournament, Negi takes part in more activities at the festival until Chao she reveals herself as a time-traveler who claims she must change the present to avert a great catastrophe in the future. Despite that, Negi and his allies confront Chao and stop her. After giving, Chao bids farewell before returning to her own time.