Fusion is an ability that Neku and his partner can perform to deal varying amounts of damage to all Noise in the area, and to heal a varying amount of damage. These Fusions are activated by tapping a Harmonizer Pin, given to Neku and Shiki at the end of the second day. Each partner has 3 Fusion levels; each successive level does more damage and heals more HP.

Fusion is gained by obtaining Fusion Stars in a partner's card minigame; Shiki's ESP Cards, Joshua's High and Low Cards and Beat's four suits in a deck of playing cards. Any unused fusion stars are carried over to the next reduction in a chain battle, but are lost at the end of the chain. Excess stars are also lost if a Fusion is performed with more than the required number.

To perform higher level attacks, Neku's partner must collect more Fusion stars. For them to use level 2 on their first Fusion attempt, for example, they need to collect 8 stars instead of 4 by ignoring the Fusion pin when it appears, and continue to collect stars. A level 3 fusion attack requires 16 stars. Neku and his partner can only use level 2 or 3 fusions if he obtains its respective sticker through a shop quest.

Every time Neku and his partner use a fusion in a chain battle, the star cost for all fusions goes up by one, to a maximum of four additional stars required. The cost is reset when the chain ends.

The damage dealt by a fusion is as follows:

DAMAGE = EFF x ATK x DIFF

• EFF: The efficiency factor of the Fusion, depending on its level and who Neku's partner is:
  • Shiki: 5 (lvl 1), 10 (lvl 2), 20 (lvl 3)
  • Joshua: 5 (lvl 1), 15 (lvl 2), 99.99 (lvl 3)
  • Beat: 10 (lvl 1), 20 (lvl 2), 30 (lvl 3)
• ATK: Neku or his partner's Attack, modified by threads.
• DIFF: The Difficulty multiplier, as follows:
  • Easy: 2.00
  • Normal: 1.00
  • Hard: 0.61
  • Ultimate: 0.40

The damage is dealt separately on each screen, using the appropriate character's Attack. Enemies that have temporarily left the battle area, such as shrews or dived sharks, are not harmed by the Fusion on the screen where they are not visible. Enemies that are simply outside Neku's current field of view, but still in his battle area, are harmed.

Contents 1 Fusion levels 2 Shiki's Fusions 2.1 Level 1 2.2 Level 2 2.3 Level 3 3 Joshua's Fusions 3.1 Level 1 3.2 Level 2 3.3 Level 3 4 Beat's Fusions 4.1 Level 1 4.2 Level 2 4.3 Level 3 5 Final Stars Finish 5.1 It appears to use all 4 protagonists energy to mark a foe with a white X, which proceeds to annihilate the foe with white bolts of energy. 6 Trivia

Fusion levelsEdit

Each partner is limited to level one fusion at the beginning. Completing shop quests for Fusion Stickers can increase this limit. Locations are as follows:

Shiki:

• D+B 104
• D+B Molco

Joshua:

• Pegaso Atelier Shibu Dept. Store
• Dragon Couture Shibukyu Main Store

Beat:

• Wild Boar 104
• Wild Boar Udagawa Back Streets

Shiki's FusionsEdit

Level 1Edit

"Shiki: Ready to die?"
"Neku: Then die!"

— Shiki and Neku

Level 1: Shiki, Neku, and Mr. Mew attack each enemy.

Level 2Edit

"Shiki: Neku! Come on!
"Neku: Right behind you!"

— Shiki and Neku

Level 2: Shiki and Neku ride Mr. Mew while he attacks.

Level 3Edit

"Shiki: Go Mr. Mew!
"Neku: Get 'em, Piggy!"

— Shiki and Neku

Level 3: Mr. Mew grows to an enormous size and fires energy beams from his eyes while Shiki and Neku stand on his shoulders.

Joshua's FusionsEdit

Level 1Edit

"Joshua: Follow my lead!
"Neku: Screw that!"

— Joshua and Neku

Level 1: Neku and Joshua drop various objects on enemies.

Level 2Edit

"Joshua: Work for you?
"Neku: What do you think?"

— Joshua and Neku

Level 2: Joshua attacks enemies with ice and Neku attacks enemies with fire.

Level 3Edit

"Neku: Another world awaits...
"Joshua: And you're going."

— Joshua and Neku

Level 3: All enemies on the battlefield are hit with the moon.

Beat's FusionsEdit

Level 1Edit

"Beat: Pick it up, Phones!
"Neku: I'm there!"

— Beat and Neku

Level 1: Beat and Neku teleport around the screen inflicting damage.

Level 2Edit

"Beat: The beat is on!
"Neku: Bring it!"

— Beat and Neku

Level 2: Chains form across the screen, Beat and Neku ride the chains.

Level 3Edit

"Beat: Let's start it up!
"Neku: No, let's end it!"

— Beat and Neku

Level 3: Beat and Neku surf a wave that consumes enemies.

Final Stars FinishEdit

This Fusion appears in order to defeat the final boss of the main story.

It appears to use all 4 protagonists energy to mark a foe with a white X, which proceeds to annihilate the foe with white bolts of energy.Edit

This final fusion may be a reference to the biblical 10th curse of Egypt, where God killed the firstborn child of every Egyptian family, except for the Israelites, whom which he instructed to mark their doors with the blood of a lamb in a X shape, and the Angel of Death would pass over them. In retrospect, Neku marks the final boss with the white X, possibly a reverse of the biblical role.

TriviaEdit

• Uzuki Yashiro and Koki Kariya are the only other characters shown to use a Fusion attack. Unlike Neku and his partner's Fusion attacks, they do not seem to be obtained with fusion stars, as Uzuki has no combo map. Instead, they will automatically execute the Fusion attack (which does not heal and only affects one screen, unlike Neku's) after five passes of the Light Puck. They are also the only other characters to use a light puck.
• Noise 44, Progfox, is the only Noise to have a Fusion-like attack. However, this is just a Noise version of Tin Pin Bahamut's Mega Flare attack.
• Joshua's Level 3 fusion is the only fusion to have a polarity; negative. It is also the only fusion where Neku speaks first.