From Scratchpad

This Act does not require you to fight any devils. You will just be running around talking to NPCs. Consider this an introduction to the different organizations to the game.

When you first talk to Yamamoto, you hear an explanation of Shinjuku's governing system before you are offered a job. If you choose to accept (引き受ける), you will be offered two codes and sent out to talk to the Messian and the Gaian that are in town. In case you missed the codes, they are "CM5988" and "CG5991."

The Messian(メシア教徒) is at the south-eastern corner of town, near the entrance to Shibuya. Talk to her and she will ask for her code. It should be CM5988. You will then be asked to take a quiz. If you choose "Not interested(興味ない)," you can skip the quiz. The quiz will test your knowledge about the Messians, knowledge that is explained to you before you take the quiz. If you get all three answers right, you will move slightly to Law. However, the change is miniscule, so feel free to skip the quiz.

Now you must talk to the Gaian Monk(ガイア僧), who is near the eastern exit that leads to Ichigaya. Repeat what you did with the Messian and you are now ready to move on with the Act. Return to Yamamoto.

Yamamoto now wants you to retreive Obelisk data from the Innocent in Shibuya. Head to X21/Y20 of Shibuya and talk to the Innnocent there about work. The Innocent will zone out and then ask you a question about law. If you answer "It is necessary(必要)" here, your alignment will shift heavily to Law. Answering no(いいえ) will not affect your alignment. The Innocent will now return to his senses and hand you the data. Take this back to Yamamoto.

Now Yamamoto will send you to the Innocent that is in Ichigaya. Head to X21/Y19 of Ichigaya and talk to the Innocent. Just like Shibuya's Innocent, this one will also zone out and ask you a question. He will ask about power, and affirming his belief in power(必要) will heavily shift your alignment to Chaos. Answering "no" will result in no change. Once you are done, return to Yamamoto and you will be done with Act Eight.