Website and data research by 101Leafy.
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Strange Journey Fusion Calculator
Pick two demons to see what they make, or pick one demon to list every pair that makes it. 101Leafy researched the game for these rules, and the calculator checks them in the same order the game does. Fusion accidents are left out.
How fusion works
- Two copies of the same demon never fuse.
- Special fusions come first. A demon on the special list is made only from its own ingredients, and a special pair always gives it.
- Two Prime demons make a Mitama. Two Mitama don't fuse.
- A Mitama with any other demon gives that demon back with higher stats.
- Two demons of the same race make that race's Prime, if it has one.
- A Prime with a demon moves the demon up or down its race, as the Prime fusion table shows. If that gives back one of the two demons, nothing is made.
- Every other pair goes by the race chart. The target level is half the two base levels added together, rounded up, plus 1. The result is the first demon of that race at or above it, or the race's top demon when none is that high. Demons made only by special fusion, and restricted demons not yet unlocked, are skipped.
- Programs: the converters turn Beast results into UMA, Genma into Fiend, and Deity into Enigma. Laplace adds 3 to the target level. Paracelsus uses the two demons' current levels in place of their base levels.
Special fusion
Seraph
Cherub
Throne
Dominion
Virtue
Power
Principality
Archangel
Angel
Norn
Atropos
Lachesis
Clotho
Demiurge
Metatron
Hachiman
Samael
Kurama Tengu
Karasu Tengu
Koppa Tengu
Frost Ace
Jack Frost
Tam Lin
High Pixie
Pixie
Lilim
Harpy
Black Frost
Pyro Jack
Incubus
Shiva
Barong
Rangda
Huang Long
Gui Xian
Long
Feng Huang
Baihu
Ongyo-Ki
Sui-Ki
Fuu-Ki
Kin-Ki
King Frost
Mother Harlot
Pale Rider
Black Rider
Red Rider
White Rider
Masakado
Bishamonten
Jikokuten
Koumokuten
Zouchouten
Alilat
Peri
Azrael
Israfel
Morax
Oni
Melchom
Itsumade
Mitra
Bifrons
Fomorian
Ippon-Datara
Horkos
Doppelganger
Momunofu
Macabre
Asura
Pisaca
Orias
Kwancha
Ouroboros
Vouivre
Basilisk
Mandrake
Dzelarhons
Moloch
Ose
Mithras
Inti
Orcus
Hel
Asherah
Valkyrie
Tiamat
Tlaltecuhtli
Mushussu
Kingu
Pabilsag
Maya
Hariti
Succubus
Airavata
Mastema
AbaddonRace chart
Find one race in the left column and the other along the top. The square where both races meet shows the Prime that two demons of that race make.
Prime fusion
A Prime fused with a demon of the race on the left: +1 gives the next demon up, +2 the one after that, and -1 the next one down. A dash means they don't fuse.
 Salamander |  Undine |  Sylph |  Gnome |  Flaemis |  Aquans |  Aeros |  Erthys | |
|---|---|---|---|---|---|---|---|---|
| Megami | -1 | +1 | +1 | -1 | -1 | -1 | -1 | -1 |
| Avian | +1 | -1 | -1 | -1 | -1 | -1 | +1 | -1 |
| Tree | -1 | -1 | -1 | +1 | -1 | -1 | -1 | -1 |
| Divine | +2 | -1 | -1 | +1 | -1 | +1 | -1 | +1 |
| Flight | +1 | -1 | +2 | -1 | +1 | -1 | +1 | -1 |
| Yoma | -1 | +1 | -1 | +2 | +1 | -1 | -1 | -1 |
| Nymph | -1 | +2 | +1 | -1 | -1 | -1 | -1 | +1 |
| Raptor | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Wood | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Avatar | -1 | +1 | -1 | -1 | +1 | -1 | -1 | -1 |
| Holy | -1 | -1 | -1 | +1 | -1 | +1 | -1 | -1 |
| Genma | +1 | -1 | +1 | -1 | -1 | -1 | -1 | -1 |
| Fairy | -1 | +1 | +2 | -1 | -1 | -1 | +1 | -1 |
| Beast | +2 | -1 | -1 | +1 | +1 | -1 | -1 | -1 |
| Jirae | +1 | -1 | -1 | +2 | -1 | -1 | -1 | +1 |
| Snake | -1 | +2 | +1 | -1 | -1 | +1 | +1 | -1 |
| Wilder | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Jaki | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Vermin | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Lady | -1 | +1 | -1 | -1 | -1 | -1 | -1 | +1 |
| Dragon | -1 | -1 | +1 | -1 | -1 | -1 | -1 | -1 |
| Kishin | +1 | -1 | -1 | +1 | -1 | -1 | -1 | -1 |
| Fallen | +2 | +1 | -1 | -1 | +1 | -1 | -1 | -1 |
| Brute | -1 | -1 | +2 | +1 | -1 | -1 | -1 | +1 |
| Femme | +1 | -1 | -1 | +2 | -1 | +1 | -1 | -1 |
| Night | -1 | +2 | +1 | -1 | -1 | +1 | +1 | -1 |
| Drake | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Spirit | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Foul | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
| Haunt | -1 | -1 | -1 | -1 | -1 | -1 | -1 | -1 |
Mitama fusion
The Mitama two Prime demons make. A Mitama fused with any other demon raises that demon's stats by the amounts on its card.
Ara Mitama
Nigi Mitama
Kusi Mitama
Saki Mitama