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Reverse Hills (逆さヒルズ, Sakasa Hiruzu)? is a dungeon in Shin Megami Tensei IV.


A building found underground beneath Roppongi Hills, it is a mirror of the building above, upside down. A path from Midtown, through a former Army shelter, leads to the building. B7F, which is also the entrance, is filled with rooms with gas-masked men working on people strapped to chairs. A gas masked man will hand over Card Key 2 to activate the elevator, believing the Samurai are "the next shift." B8F is devoted to child care; a gas-masked man with two kids will give Card Key 3 under the same assumption.

B9F is filled with demon walls, making it necessary to traverse through the entire hall to get to the room where Card Key 4 is at. Unlike the last two, the gas-masked man will attack with the Deceased Horde after being surprised when inserting a needle into his charge's head. After defeat, he will give the Samurai a brown-colored bottle and collapse; when frisking him, Walter will find the card key and confiscate it. The man himself, though, is severely brain-damaged, repeating in a childish voice the same Ashura-kai slogans the kids in the floor above were seen to chant. Another set of elevators leads to B51F.

B51F leads to a processing facility; most doors are locked, two through the use of a password. The Samurai discover what Red Pills are made of when an Ashura-kai employee takes the bottle and mentions it's brains, patiently explaining to Isabeau the horrifying process of the creation of Reds; people are abducted from the underground districts, conditioned as seedbeds and have their neurotransmitters harvested at regular intervals. After the scene, the floor will be filled with the sweet-smelling pink gas made by Yaso Magatsuhi and the group will be knocked out.

Revisiting the facility after siding with either Walter or Jonathan and collecting the Card Keys from the Master Samurai at Roppongi Hills allows the Samurai to challenge Yaso Magatsuhi as revenge for their earlier encounter. There is also an alignment-affecting question if rechecking on the children of B8F.

Reverse Hills is a human farm, its prisoners kept under inhumane conditions in filthy, bloodstained rooms also used as operating theaters. Most of the adults are used as seedbeds for Red production, and at least some of the children brainwashed by the Ashura-kai also meet this fate. Red production is at an ever-increasing pace, and the workers mention considering using the children in it as well, and referring to the women as "breeders." Many rooms have their prisoners brain-damaged due to overharvesting. Sanitary facilities are minimal.

Tayama, from witnesses in B8F, apparently sometimes visits the facility.


Race Demon Lvl HP MP Physics Gun Fire Ice Elec Force Light Dark ST DX MA AG LU
Jirae Tsuchigumo 30 245 126 Wk Rp 33 33 33 33 33
Jirae Titan 37 389 88 Rs 50 44 34 40 32
Vermin Arachne 40 306 157 Dr Wk 43 39 39 52 43
Wood Zaccoum 42 214 237 Dr Wk Nu 39 43 57 36 52
Raptor Gurr 43 325 166 Rp Wk Nu 46 42 42 56 46
Yoma Valkyrie 45 455 103 Rs Wk Rs Rs 60 53 41 48 39
Jirae Tlaltecuhtli 46 464 104 Rs Wk Dr 42 47 62 40 57

Main Flynn - Isabeau - Jonathan - Walter - Burroughs
Supporting Hope - Issachar - Gabby - Navarre - Hugo - K - Tayama - Kaga - Hikaru - Fujiwara - Skins - Mastema - Stephen - Black Samurai - The White - Kiyoharu - Akira - Kenji - Aquila - Ahazuya Mikado - Charon - Mido - Lucifer - Merkabah - Masakado
Minor Terminal Guardian - Nozomi - Minako
Adaptations Gina - Stan - Al-mi'raj - Asuma - Nicola - Ys
Locations Eastern Kingdom of Mikado - Mikado Castle - Naraku - Kiccigiorgi - Tokyo - Ueno - Chiyoda - Shinjuku - Ikebukuro - Kagome Tower - Shibuya - Roppongi - Ginza - Tsukiji Hongwanji - Midtown - Reverse Hills - Camp Ichigaya - Blasted Tokyo - Pluto Castle - Infernal Tokyo - Monochrome Forest - Tokyo Bay - Minami Sunamachi - Purgatorium - Lucifer Palace - River Styx
Organizations Samurai - Hunter Association - Ashura-kai - Ring of Gaea - National Defense Divinities - Counter Demon Force
Terminology COMP - Gauntlet Rite - Press Turn Battle - Smirk - Domain - Horde - Terminal - Cathedral of Shadows - Red Pill - Hunter - Yamato Perpetual Reactor - Whisper event - Demonoid - Neurisher - Cocoon - Streetpass
Lists Demons (Evolutions - Special Fusions) - Bosses - Skills - Items - Apps - Quests - Translations
Other Media
Games Shin Megami Tensei IV Apocalypse
Production Original Soundtrack
Publication DEMONIC GENE - -Prayers- - Artbook
Events Shin Megami Tensei Online Live 2021: Reason of Music