Activate All Terminals

This will be a long Quest and will completed as soon as you find all terminals in the game. First one you'll find is in Naraku's Excavation Worker Quarters. It is part of the main objectives so you won’t miss it.

Ueno - Underground District Terminal

Upon arriving, you’ll be greeted by a smirking man. This is a safe zone, which will provide you relief after battling Medusa and exploring the immediate area. There’s a nearby vent leading to Ameyoko Way, the area south of the station. Ignore it for now then head west. Save your game and prepare for another battle. Beyond the door right beside the vent is the terminal but you have to clear the demon’s domain there.

LV14 Koppa Tengu

Weak: Elec

Resist: Force, Light

LV20 Karasu Tengu

Weak: Elec, Ice

Repel: Fire

Null: Light

This battle will be quick if you have Mazio. The larger Tengu is also weak to Ice to use that to exploit their weaknesses and get more turns. This horde will often use regular attacks. Just make sure to heal if necessary and don’t bring out Demons that are weak against force attacks. After clearing out the station and lifting the domain, the Ueno Station will become available.

Kasumigaseki (Counter-Demon Force) Terminal

To be able to use this terminal, you have to defeat the demons that created a domain in the terminal. You'll reach this terminal near the end of the main quest "Find the Military Base"

LV23 Pixie Horde

Null: Light, Dark

This horde doesn’t have any particular weaknesses and they can heal themselves a lot using Diarama. They’re fond of using fire Skills so you can deploy Demons who can nullify/reflect/absorb fire damage to make them lose press turns. Having your own healing and buffing skills will also help you win this battle.

Shinjuku Terminal

After arriving in the station, go straight up to find a red button. Push it to open the gates. To the west lies the elevator that will take you back to the surface and to the right is the terminal that’s currently occupied by a demon. There are also some new items in the stores here so you may want to upgrade your gear and prepare your party before attempting to clear it.

LV24: Ose

Resist: Dark

This demon has around 900 HP and has no weaknesses. Its main attack is Fatal Sword, which deals 150+ damage to a target. You need to bring out high-HP Demons as well as those that can increase your party’s defense and/or lower the enemy’s attacks. If you have a demon that can innately nullify/repel/ absorb physical attacks then by all means use it. Having a demon with a skill buff that can repel physical attacks will do as well.