Restaurateur's Fathoms
Restaurateur's Fathoms is the Story Dungeon of Intervallo I: Hell's Chicken, and the first Dungeon to be tied to an event.
Overview
The Restaurateur's Fathoms essentially works like a one-floor Mirror Dungeon with 7 Combat nodes, with the player selecting five Sinners (with one Identity and three E.G.Os from ZAYIN to HE) upon starting a run to go through the entire map.
There are two different versions of the dungeon to play, each with different difficulty and levelling mechanics.
Entry Cost | Enkephalin Module x1 ![]() |
Enkephalin Module x2 ![]() |
Enemies
Encounters in Restaurateur's Fathoms comprise mainly of enemies encountered throughout the rest of Intervallo I. Specifically,
- Normal Encounters consist of a a mix of K Corp. Checkpoint Security and K Corp. Security#Chicken-headed K Corp. Checkpoint Security.
- Elite Encounters consist of a 2-Wave battle with the aforementioned enemies.
- Focused Encounters consist of a mix of the various types of Headchicken a.k.a. Bongy.
The final node always consists of a battle with Papa Bongy, with three Headchicken a.k.a Bongies: one -A, one -B, and one -C variant.
Papa Bongy will be replaced with Spiced-up Papa Bongy in A Restaurateur's Spicy Fathoms.
E.G.O Gifts
All E.G.O Gifts from the Mirror Dungeon up to Mirror of the Lake is available in this Dungeon. Furthermore, several new E.G.O Gifts are available from events unique to this Dungeon.
Unique E.G.O Gifts
There are 2 Random Abnormality Encounters exclusive to the Restaurateur's Fathoms (distinguished with a chicken symbol underneath the Node) with a total of 5 unique E.G.O Gifts that can be obtained.
Gift | Description | Event |
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Hot ‘n Juicy Drumstick |
When inflicting ![]() ![]() ![]() ![]() |
The Chicken Strife |
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Dry-to-the-Bone Breast |
When inflicting ![]() ![]() ![]() ![]() |
The Chicken Strife |
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Tango Marinade |
Allies gain Clash Power by half their Speed against opponents with lower Speed. | Tango of Poultry Passion |
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Contaminated Needle & Thread |
Each turn, the first skill to deal damage to an enemy inflicts Bleed by 1/3 of the damage dealt. | Tango of Poultry Passion |
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Sharp Needle & Thread |
Each turn, the first skill to deal damage to an enemy deals bonus fixed damage by half of the damage dealt. | Tango of Poultry Passion |
Dungeon Events
All Abnormality Events from the Mirror Dungeons are also available in this Dungeon, appearing as they did in Mirror of the Lake. Additinally, two unique Dungeon Events are also available in this Dungeon.
Unique Dungeon Events
The Unique E.G.O Gifts can be obtained from two new Dungeon Events unique to the Restaurateur's Fathoms. In about 50% of Dungeon runs, the unique Dungeon Events are notated by a chicken symbol beneath their corresponding nodes.
The Chicken Strife

Some folks are blocking the way.
They’re sitting on a deck, yelling at each other.
“Look at this succulent piece! The rich juice running down the fibers of luscious meat… This is what chicken is about!”
“Wrong. This piece has a clean taste, with not an ounce of grease tainting the tongue. This is the real deal.”
The two turn around at the same time to face you.
“You there! Tell us which is better!”
Chicken’s chicken, duh. Gain an E.G.O Gift. “That’s… true.” “An irrefutable point.” They lowered their hands and settled down. “What a strange thing we were fighting over.” “They’re right… The one truth is that the chicken is always right.” After a passionate handshake, the two gave you their bucket of chicken. “A wise gourmet such as yourself deserves both pieces. Please, take this, we insist.” E.G.O Gift Hot 'n Juicy Drumstick Earned! E.G.O Gift Dry-to-the-Bone Breast Earned! |
Gotta be the drumsticks, all rich and juicy. Gain an E.G.O Gift. “You see! The drumsticks are better!” “You don’t know what good taste is.” The person holding a chicken breast let out a baffled sigh. “Ey! Here’s your reward. You deserve a drumstick of your own.” Satisfied, the one with a drumstick handed you another from the bucket. “I’m counting on you to keep that leg up!” Unsure of what you’re being trusted with, you left the table with the drumstick. E.G.O Gift Hot 'n Juicy Drumstick Earned! |
The breast, of course, unsullied and spotless. Gain an E.G.O Gift. “There ain’t no way! You’d give up this banquet of juiciness…?” “It’s fat, not just juice. The breast is healthy, light, comes in hefty servings, and is easy to eat—it’s obviously the reasonable choice.” The person holding a piece of chicken breast pleasantly remarked. “Here, a reward for you. Take this breast.” A sizable piece was brought out of the bucket. “Best of luck with your gains. I hope you stay healthy.” Unsure of what you’re supposed to gain, you left the table with the chicken breast. E.G.O Gift Dry-to-the-Bone Breast Earned! |
Tango of Poultry Passion

A bright spotlight shines on a portion of the noisy area.
It seems as though the chickens are attending a… ball.
“That’s the tango.”
Looking at their movements which might be a dance or a tussle, you notice sauce leaking from one of them.
It doesn’t seem to be aware of this…
A Restaurateur's Spicy Fathoms
A Restaurateur's Spicy Fathoms is the hard version of the regular Intervallo I Story Dungeon. Several major differences exist between the normal and hard versions:
- Identity Levels use the actual Identity levels instead of being fixed at certain values.
- Enemies have larger Levels.
- The final boss of the Dungeon is upgraded. (Papa Bongy ——> Spiced-up Papa Bongy).
- No Story Episodes play at any point in the Dungeon.
Story Chapters
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Inferno (Main Chapter) |
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Deviazione (Detour Tales) |
Intervallos | Intervallo I - Intervallo II - Intervallo III - 1 - Intervallo III - 2 - Intervallo IV - 1 - Intervallo IV - 2 - Intervallo V - 1 - Intervallo V - 2 | |
Mini Episodes | Season 1 - Season 2 - Season 3 - Season 4 - Season 5 | ||
Story Dungeon | Inferno | D-02 (Canto I) - J-03 (Canto II) - K-02 (Canto III) - Reminisced League of Nine (Canto IV) - Into the Dark (Canto V) - The Tale of a Great Fixer Who Once Reached for The Dream (Canto VII) | |
Deviazione | A Restauranteur's Fathoms (Intervallo I) - A Blade Fiend's Fathoms (Intervallo III) - The Final Problem (Intervallo IV) - The Final Check-up (Chapter 7.5) |