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The shiki-ouji (式王子*)? is an exceptionally powerful type of shikigami that could only be summoned as a servant by the most elite of those that practiced the mystical arts of Yin and Yang. It could be used to scare away demons that cause sickness and to ward off disasters to its master. The shikiouji's basic nature is said to be very close to that of an oni and is thus very ferocious, making it very dangerous for average mystics to attempt to summon it.
They first appear during the Manikin massacre in random encounters in the Mifunashiro and Asakusa areas. Shiki-Ouji can also be found within the Mantra Army Headquarters in Ikebukuro and can be surmised to be a follower of Yosuga.
"A powerful creature often summoned by Japanese sorcerers called onmyoji. They are used both to hurt and to heal, but their true nature is said to be very violent."
—Shin Megami Tensei V lore
A Shiki-Ouji in Nagatacho will request the help of the protagonist in the "Talisman Hunt" subquest. Three of its Shikigami Talismans have been blown upward into the mountains by the wind and it wants the protagonist to retrieve them. One has ended up in the one-way drop near the four Tsuchigumo in Toranomon, another has ended up on a roof just to the north of the two Tsuchigumo in West Shinbashi, and the final talisman can be found on the path to Onarimon in Shinbashi, along the path leaving Kamiyacho to the southeast. After returning to Shiki-Ouji, it will opt to prove its might in combat and engage the protagonist in battle. After the battle, it thanks the protagonist, able to tell that its power has returned, and it rewards the protagonist with the Brute Talisman.
Shiki-Ouji will later appear as an encounter during the raid on Jouin High School. The protagonist can avoid a confrontation with one by offering it a Life Stone. Afterward, Shiki-Ouji will appear as a normal enemy at Shinagawa Pier. They can be found walking normally as well as appearing as a floating blue talisman similar to Shiki-Ouji's Devil Summoner incarnation before they materialize and attack.
Should an Inugami be in the protagonist's stock, they may interject in a conversation and speak with Shiki-Ouji.
Conversation
[Inugami stepped forward and began talking to a demon!]
Inugami:
HRM! ARE YOU A SHIKIGAMI? A SHIKIGAMI OF PAPER!
Shiki-Ouji:
Indeed, I am! My name is Shiki-Ouji... I once served another as a shikigami.
Inugami:
I AM INUGAMI! A SHIKIGAMI OF DOGS!
Shiki-Ouji:
An Inugami, you say...? I've heard tales about you. Is that blue-haired demon your current owner — that is, your master?
Inugami:
RIGHT RIGHT! I AM HIS COMRADE!
Shiki-Ouji:
If he is capable of subjugating a shikigami, does that mean he is an onmyoji? He doesn't quite look the part...
Inugami:
HRM! HE IS NOT AN ONMYOJI! HE IS A WEIRD DEMON!
Shiki-Ouji:
A weird demon indeed. Yes, I do sense a mysterious aura about him.
Inugami:
HE IS IMPRESSIVE, I THINK... SOMETHING IMPRESSIVE WILL HAPPEN SOON... YOU SHOULD JOIN US!
Shiki-Ouji:
That doesn't sound so bad. ...However, I must decline!
Inugami:
HRM! WHY?
Shiki-Ouji:
A mysterious wind blows through the netherworld. A mighty gale that scatters us ever closer to an uncertain destiny... I wish to entrust myself to this wind a while longer, and see where it leads.
Inugami:
HARD TO UNDERSTAND... DON'T REALLY GET IT...
Shiki-Ouji:
Don't worry about it. I'm sure the answers will come eventually... Use this well, and hopefully you all can survive until that day comes.
"A powerful shikigami that can be summoned by certain onmyodo. It can cause harm to others or cure illness, but its ordinary temperament is quite vicious."
—Devil Summoner: Soul Hackers 3DS compendium
Shiki-Ouji reappears a demon exclusive to the 3DS remake, available after Nemechi evolves into the leg form (female growth path), and costs 300 D-Souls. His artwork is based on his appearance from Shin Megami Tensei III: Nocturne.
Persona 4[]
"A powerful shikigami that can be summoned by certain omnyodo. It can cause harm to others or cure illness, but its ordinary temperament is quite vicious."
—Persona 4 compendium
Persona 5[]
"An exceptionally powerful shikigami. Only the most elite onmyoji are able to summon and bind it to paper. It can ward off disaster or cure illness, but its ordinary temperament is quite vicious."
Shiki-Ouji first appears as a mid-boss in Madarame's Palace. Its strategy is very simple: inflict Rage on the party, shrug off their basic attacks with its Physicalimmunity and exploit their lowered defense with Snap. The party should focus their offense using Magic skills and try to target its weakness to Nuclear skills. It will drop the Media skill card upon being defeated.
Royal[]
Shiki-Ouji appears as a Savage Shadow, meaning it cannot be negotiated with until it only has 25% of its health left. When itemized through Electric Chair execution, Shiki-Ouji will yield a Double Shot Skill Card. During a fusion alarm, Shiki-Ouji will yield a Triple Down Skill Card.
Persona 5 Tactica[]
"An exceptionally powerful shikigami. Only the most elite onmyoji are capable of summoning and binding it to paper. It can ward off disaster or cure illness, but its temperament is quite vicious."
—Persona 5 Tactica background
Devil Survivor 2 Record Breaker[]
"A powerful shikigami of Izanagi-style, an ancient sect of Onmyoudou in what is now Kochi Prefecture. In Izanagi-style prayer songs, a priestess named Amenaka-hime was apprenticed to the Indian god King Izanagi and began training in the ritual arts. It is said that Shiki-Ouji spirits were bound into paper and could be used to protect against illness and inflict curses."
—Devil Survivor 2 Record Breaker compendium
Shiki-Ouji is summoned by the party on Thursday of the Triangulum Arc to aid them against Arcturus. Shiki-Ouji will only obey those he believes are worthy of being his "Tayuu" however, leading to a battle to determine the protagonist's worth. He creates three copies of himself to aid him in battle, with two teleporting to the other side of the party. Each Shiki-Ouji is joined by two Shikigami. During battle, if any one Shiki-Ouji party has Shikigami present, a Shikigami can sacrifice itself to resurrect a defeated Shiki-Ouji and its two Shikigami.
After the battle he accepts the protagonist as his Tayuu master. Yamato then takes Shiki-Ouji and harnesses his power for an app on the protagonist's phone, allowing him to take damage from Arcturus' Plough of Death attack in place of his friends. The app only works on humans, however, and all demons will keep their weakness, likewise the protagonist cannot remove his own weakness. When Miyako Hotsuin joins the battle against Arcturus he can use the Soul Bind app again to take the damage she would take.
Defeating Shiki-Ouji unlocks him for fusion. He requires a special fusion of Take-Mikazuchi and Tenong Cut.
Shin Megami Tensei: Liberation Dx2[]
"A shikigami conjured by Onmyoji with the power to heal or inflict pain and suffering. It usually takes the form of a paper doll or animal, but can change its shape freely. Those who touch it will fall victim to its curse."
Starting from Shin Megami Tensei III: Nocturne, the original design of Shiki-Ouji from Shin Megami Tensei: Devil Summoner has been transferred to Shikigami, and it instead received a brand new design.
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