Yvette refuses to let her recently freed beast fight due to its unstable condition, but rival participants mock her and challenge the validity of her beast's S-rank status. Taunted as cowardly and defective, Yvette eventually accepts the challenge to spar against her cousin’s Thunderbird, a B-rank beast boasting a higher level. As the fight is set with an agreed referee, Jason is secretly ordered by his father to cripple Yvette’s beast, knowing that an S-rank beast’s death would ruin its value. Despite the danger, Jason confidently boasts his Thunderbird’s overwhelming level superiority, setting the stage for a brutal confrontation with high stakes.