Shijima Ending:

Early on, you'll be presented with a choice regarding the Mantra. To get the Shijima Ending, you absolutely need to choose the path of Reason that aligns with Shijima. This usually involves siding with the Reason that emphasizes order, peace, and a structured society. Pay close attention to the dialogue and the philosophies presented by each Reason. If you pick the wrong one, you'll lock yourself out of this ending.

Throughout your journey, you'll encounter various factions and individuals. Your goal is to consistently make choices that support the establishment of a new, ordered world. This means generally siding with characters and factions that advocate for rebuilding and structure, rather than pure chaos or absolute freedom without rules. Avoid actions that would lead to widespread destruction or anarchy, as these lean towards other endings.

Keep an eye out for specific NPCs who champion the cause of order. Completing their quests or assisting them in their goals will often push you further down the Shijima path. For example, characters who want to establish new settlements or enforce laws are usually good indicators. Conversely, steer clear of those who revel in destruction or seek to exploit the post-apocalypse for personal gain without any regard for a future society.

As you approach the game's climax, the choices you've made will culminate. The final sequence will likely involve a confrontation with the forces of Chaos or other opposing ideologies. Your dialogue options and actions during these critical moments will be paramount. Ensure you consistently express a desire for a world governed by Shijima's principles of order and peace. If you've made the right choices throughout the game, you'll be on track to achieve this ending.