From Scratchpad

This Act is also a quick run through a dungeon and a boss battle. Bring a party along for this. Luckily, this boss battle is not nearly as hard as the previous Act.
After you talk to Yamamoto, head back to Third Home and talk to Snakeman. He should give you the Kingdom plate(王国) for Suginami Dungeon. Head over to the dungeon, but be sure to have access to some form of lightning attack before you go.
Much like the previous event dungeon, this dungeon is very straight-forward and there are few battles between the entrance and the boss room. Still, you must travel to the side rooms of the first floor in order to get two cross-shaped keys, which you need in order to advance to the boss. Each side room will spawn either Fornecous or Dekarabia when you enter. Defeat all the enemies in the room will cause a chest containing a key to appear. Once you have both keys, move on to the next floor.
Here, you will bump into Azura, who gives you a little extra story background. You are not obligated to talk to her, so feel free to go right to the teleporter behind her.
This is the final floor before you reach the boss room. Most veterans of Suginami Dungeon will recognize this floor as the one where you must go down both the left and right paths before you can enter the bottom-center door. Luckily, all the doors are open here, so you can run past any enemies that spawn here if you so wish.
Now for the boss battle against Eligos(エリゴール) and a team of Fornecous. Eligos is weak against all lightning attacks, and the Fornecous are weak against all fire and lightning attacks. While the enemies here are not as strong as the ones you faced in Act Nine, you should not charge in. Instead, try to separate Eligos from the others.
If you noticed, there is a barrier between you and the enemies. Use it to your advantage. Eligos is much more aggressive then his minions, and will attack anyone who charges magic, so he will come running right for you. Let him follow you to the area behind the barrier, and let your other team members pummel the boss. The remaining Fornecous are the same as the ones you faced in the side-rooms of this dungeon, so they should not be a challenge.
Once you finished watching the cutscene you will be rewarded with a two hundred thousand experience bonus and a chance to heavily affect your alignment. An NPC called the Crystal of the Kingdom(王国のクリスタル) will have appeared in the middle of the map. It will give you three questions that can easily swing your alignment to Law or Chaos. I would take this moment to think about which alignment. When you are ready, talk to the crystal. The first question is, "What will you do with the Jewel of the Gods?" You can answer:

• 1)Protect it-Shift to Law
• 2)Take it-Shift to Chaos

The second question asks, "What do you desire?" The answers are:

• 1)Peace-Shift to Law
• 2)Power-Shift to Chaos
  

The final question asks, "What do you think is necessary for this world?" These are the three answers:

• 1)Absolute Law-Shift to Law
• 2)Undeniable Power-Shift to Chaos
• 3)Neither-Neutral

Once you made your choice, talk to Azura, who also appeared when the boss was defeated. She will teleport you to Shinjuku Babel, where you report to Yamamoto. Do so and you will be treated to a cutscene, as well as to an experience bonus.