Sewer

The sewers are a series of interconnected optional dungeons in Shin Megami Tensei: Devil Summoner.
==Profile==
There are 5 sewers in total, and only one is actually required to be explored to complete the game.
====Yarai Sewer====
The Yarai Sewer is partially unlocked (Floors B1-B2) after completing the Public Library dungeon, and contain enemies from the public library and the Spirit World outside Azuma's House. 
Floors B3-B5 are unlocked after completing the Kitayama University dungeon, and contain enemies from levels 10-18. The DB Busters can be found on B5F. The entrance to the Alien Dimension (Location) is also found on floor B2 here, but cannot be accessed until the final dungeon. The passages to the Seaside Park and Hibarigaoka sewers are found on B3F.
====Mount Kasagi Sewer====
Floors B1-B2 are opened after meeting with Professor Azuma on Mount Kasagi, and contain level 17-22 enemies.
Floors B3-B5 are opened after completing the Hikawa Shrine dungeon, and contain enemies between levels 23-29. The DB Busters are also found on floor B5, and have new dialogue if the player has already met with them in the Yarai Sewer. The Gargantua can also be fought on B5F. The passages to the Asahi district, Seaside Park, and Hibarigaoka sewers are found on B3F.
====Asahi Sewer====
Floors B1-B2 are opened after the Spirit World outside Kumiko's House, and contain enemies from levels 29-36.
Floors B3-B5 are opened after completing the Museum dungeon, and contain enemies from East Asia TV and the Radio Tower.
The DB Busters are now found on floor B4, and will repeat the same dialogue from their second encounter from now on. The Gargantua Q can be fought on floor B5. The passages to the Mount Kasagi and Seaside Park sewers are found on B3F.
====Seaside Park Sewer====
The Seaside Park sewer is fully opened after the Radio Tower is completed, and contain enemies from Chinatown. The DB Busters can be found on floor B4 here. The Gargantua X can be fought on floor B5. The passages to the Mount Kasagi, Yarai, and Asahi district sewers are found on B3F.
====Hibarigaoka Sewer====
The Hibarigaoka sewer is the only sewer dungeon that is mandatory to complete the game. After escaping Avīci Hell and obtaining Azuma's book from the coin locker, Sid Davis asks the protagonist to do what the professor's note says to open the entrance to the ancient tomb. The note says "Beneath the earth, below the hills where birds dance around in the heavens, turn the stone plug and release the water." The kanji for 'Hibari' means 'skylark', and 'oka' means 'hills', and the sewers are 'beneath the earth'. The dungeon is unlocked after the Tenzan Tendou's Mansion dungeon, but can only be accessed through other sewers. It can be accessed from the overworld map after completing the Avici Hell dungeon. The enemies here are from the Chiantown and Tenzan Tendou Mansion dungeons, as well as some lower level enemies like Basilisk. The DB busters can be found on floor B4, as usual, and the Gargantua 8, the strongest and last of the gargantua demons, can be fought on B5F.
==Items==
====Yarai Sewer====
*500 MAG
*￥50000
*Jewel
*￥10000
*AG Incense
*Cakra Drop
*Chakram
*Stun Grenade
====Mount Kasagi Sewer====
*Renki Sword
*Bat Wings
*M16A2 x2
*Muscle Arm x2
*800 MAG
*￥10000
*Rabidori Horns
*Souritsu Twin Spear
*MA Incense
====Asahi Sewer====
*Jewel
*Hangon-Ko
*Stinger
*1000 MAG
*Solothurn S18
*Cakra Chip
*Stun Grenade
*ST Incense
*Renki Sword
*Gaia Guard
*￥30000
*Death Scythe
====Seaside Park Sewer====
*1000 MAG
*A-Chinsin
*S-High
*Jewel x2
*￥10000
*Cakra Chip x2
*Soma
*IN Incense
*Dis-Stone
*Kin-Tan
*Gallian Sword
====Hibarigaoka Sewer====
*Renki Sword
*Jewel x3
*Stun Grenade
*ST Incense
*Tenketsusin
*Hangon-Ko
*￥40000
*Marijam Axe
*Halo Helmet
==Demons==
*Blue boxes indicate bosses.
====Yarai Sewer====
=====B1F-B2F=====
Demon 	Race 	Level
Pixie 	Fairy 	2
Poltergeist 	Spirit	2
Scarecrow 	Undead	3
Knocker 	Jirae 	4
Preta 	Haunt 	4
Ubu 	Vermin	5
Kabuso 	Beast 	6
Hippou 	Raptor	6
Ba 	Flight	7
Nacht Kobold	Night 	7
Kijimuna 	Fairy 	8
Bogle 	Brute 	8
Koropokkuru 	Jirae 	9
Stolas 	Fallen	9
Waira 	Wilder	9
Agathion 	Yoma 	10
Jubokko 	Wood 	10
Hairy Jack 	Beast 	11
Kikimora 	Night 	13
=====B3F-B5F=====
Demon 	Race 	Level
Quicksilver 	Spirit	10
Waxwork 	Undead	11
Obariyon 	Haunt 	12
Yowie 	Vermin	13
Angel 	Divine	14
Ogre 	Jaki 	14
Jack Frost 	Fairy 	15
Moh Shuvuu 	Raptor	15
Toubyou 	Drake 	15
Yamachichi 	Flight	16
Yamawaro 	Brute 	16
Afanc 	Wilder	16
Katakirauwa 	Beast 	17
Melchom 	Fallen	17
Yomotsu-Shikome	Femme 	17
Pyro Jack 	Fairy 	18
====Mount Kasagi Sewer====
=====B1F-B2F=====
Demon 	Race 	Level
Torso 	Spirit	17
Shaytan 	Yoma 	18
Ribhu 	Jirae 	18
Rastaman 	Undead	18
Sandman 	Night 	19
Ghoul 	Haunt 	19
Tenaga 	Jaki 	20
Archangel 	Divine	21
Tuofei 	Flight	22
Yato no Kami	Snake 	22
Suiko 	Wilder	22
Asinaga 	Jaki 	22
Domovoi 	Fairy 	23
=====B3F-B5F=====
Demon 	Race 	Level
Leanan Sidhe	Femme 	23
Okiku-Mushi 	Vermin	23
Asp 	Drake 	23
Itsumade 	Raptor	24
Nekomata 	Beast 	25
Tokebi 	Brute 	25
Maruts 	Yoma 	26
Dwarf 	Jirae 	26
Nisroc 	Fallen	26
Inferno 	Spirit	26
Hinoenma 	Night 	27
Agony 	Undead	27
Enku 	Haunt 	27
Alraune 	Wood 	28
Todomeki 	Femme 	29
Gargantua 	Zoma 	39
====Asahi Sewer====
=====B1F-B2F=====
Demon 	Race 	Level
Principality 	Divine	29
Caladrius 	Flight	30
Vouivre 	Snake 	30
Ocelot 	Jaki 	30
Myrmecoleon 	Vermin	30
Lorelei 	Fairy 	31
Nue 	Wilder	31
Hsing-Hsing 	Beast 	32
Yomotsu-Ikusa	Brute 	32
Stymphalides 	Raptor	32
Yuki Jyorou 	Femme 	34
Dzolob 	Haunt 	34
Tengu 	Yoma 	35
Kwancha 	Jirae 	35
Power 	Divine	36
=====B3F-B5F=====
Demon 	Race 	Level
Incubus 	Night 	34
Purski 	Brute 	37
Legion 	Spirit	37
Zaccoum 	Wood 	38
Holawaka 	Flight	39
Gdon 	Beast 	39
Gashadokuro	Jaki 	39
Patriot 	Undead	39
Spriggan 	Fairy 	40
Zhen 	Raptor	40
Purson 	Fallen	41
Succubus 	Night 	42
Basilisk 	Drake 	43
Virtue 	Divine	44
Mothman 	Vermin	44
Gargantua Q	Zoma 	50
====Seaside Park Sewer====
=====B1F-B2F=====
Demon 	Race 	Level
Legion 	Spirit	37
Zaccoum 	Wood 	38
Holawaka 	Flight	39
Gashadokuro 	Jaki 	39
Spriggan 	Fairy 	40
Zhen 	Raptor	40
Purson 	Fallen	41
Xiuhtecuhtli	Yoma 	43
Porewit 	Wilder	43
Basilisk 	Drake 	43
Virtue 	Divine	44
Culebre 	Snake 	44
Mothman 	Vermin	44
Ammut 	Beast 	46
=====B3F-B5F=====
Demon 	Race 	Level
Xiuhtecuhtli	Yoma 	43
Oumitsunu 	Jirae 	43
Amazon 	Femme 	43
Porewit 	Wilder	43
Basilisk 	Drake 	43
Virtue 	Divine	44
Culebre 	Snake 	44
Berserker 	Brute 	45
Macabre 	Spirit	45
Ammut 	Beast 	46
Kudlak 	Haunt 	47
Gargantua X 	Zoma 	58
====Hibarigaoka Sewer====
=====B1F-B2F=====
Demon 	Race 	Level
Xiuhtecuhtli	Yoma 	43
Oumitsunu 	Jirae 	43
Amazon 	Femme 	43
Basilisk 	Drake 	43
Virtue 	Divine	44
Culebre 	Snake 	44
Berserker 	Brute 	45
Macabre 	Spirit	45
Ammut 	Beast 	46
Kudlak 	Haunt 	47
=====B3F-B5F=====
Demon 	Race 	Level
Basilisk 	Drake 	43
Macabre 	Spirit	45
Da Peng 	Flight	47
Kudlak 	Haunt 	47
Barbatos 	Fallen	48
Titania 	Fairy 	49
Yurlungur 	Snake 	50
Hypnos 	Night 	51
Python 	Drake 	51
Vetala 	Haunt 	54
Gargantua 8	Zoma 	70
Category:Shin Megami Tensei: Devil Summoner Locations