Ahh, no worries! Your walkthrough is very in-dept and I enjoy your commentary. I think you're better at writing the guide than I do. To be honest, I anticipated the community to post a walkthrough, and I encourage that. Right now, I have my hands occupied with feedback. It's nice to see players helping each other out. When posting guides, but sure to tag it with "Spoiler".
Note: regarding Death 8 ending; there is no point requirement, but a condition. When Ikuya asks you who you like the most and you don't pick Blace, then choose to go after him, he sends you back into the past.
Some other achievements trigger in this way too. I applaud you for finding all of the endings by yourself.