One-on-One is skill exclusive to the Monster spin-offs. It is a full body charge attack that will bring the practitioner and target down to 1 HP, and uses the target's Kamikazee resistance to calculate success. One-on-One is very similar to the more common Body Slam technique, but will not damage the user if the skill misses the target.
Called Kamikaze with one "E" in this game, and requires the monster to reach level 18 with 126 HP, 108 attack, and 108 defence. It is naturally learned by the Army ant, HammerMan, RotRaven, and Spikerous monsters.
The requirements to learn Kamikaze are unchanged. It is naturally learned by the same monsters as before, along with the RushFish.
One-on-One is learned via the Boom Boxer, Toughie, Berserker, Martyr, and Stormsgate Citadel skillsets.
The skill has been slightly tweaked, with the success probability increasing if the target's HP is high. One-on-One will have 100% accuracy if the target has a max HP of 2,250 or more regardless of any kamikazee resistance. This aspect is balanced out against large and gigantic monsters, who innately cut the accuracy down to 50% and 25% respectively.