Automatic Branches
Not all branches you take in Akai Ito are directly the result of a choice. Sometimes, the game sends you down certain plot branches automatically, based on one or more choices you made in the past.
If you have the game, you should be able to tell which plot branch you took by following the instructions and looking at the divergence map from the game's menu.
So, this section is for those who don't have the game yet (please buy it!). If you do not need to view this information, you should not, as it may spoil parts of the game for you.
So, just to reiterate...
SPOILER WARNING!!!
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Yumei:
Yumei's route is not yet complete, although it shares some space with Uzuki's route.
Uzuki:
In the scene titled "Twilight", there is one automatic branch. If you met Uzuki at dinner and talked to her ("Gather courage and follow through!"), you will take the right branch here. If you didn't talk to her, or took the taxi to the mansion and decided to return to the hotel, you would take the left branch. However, the path of the story where you make those choices hasn't been fully translated yet, so you can be certain that you're taking the right branch.
In the scene titled "Nie no Chi", there are two automatic branches. For the first, you will not be going left if you're on Uzuki's route. Take the right branch if you decided to investigate the hall ("I'll check it out.") in the "Twilight" scene. If not, take the center branch.
For the second, left is for Yumei's route and right is for Uzuki. Since you're on Uzuki's route, go right.
In the scene titled "Unlawful Invasion?", there are two automatic branches. For the first, if you chose not to tell Uzuki about meeting Kei-kun ("Let's not bring him up."), take a right. If you told her, take a left.
For the second branch, if you ran after Uzuki ("Chase after her") in the scene "One Night with a Flood of Visitors", take a left. Otherwise, take a right.
In the scene titled "The Guardian's Eyes", there is one automatic branch. If you decided to investigate the noise ("Check it out") in the "Twilight" scene and received the talismans from Uzuki, take a left. If not, take a right.
In the scene titled "Crimson Admonition", there are two automatic branches, but since the first has to be unlocked by choices you make way over in Tsudzura's chapter, for all intents and purposes, there is only one at the moment. If, in the scene titled "Moon and Flowers", you chose not to tell Uzuki about seeing Kei-kun ("Let's not bring him up."), or if you chose not to run after her ("Don't chase after her") in the scene "One Night with a Flood of Visitors", or if Uzuki wasn't on your mind ("Doesn't matter...") in the scene "Unlawful Invasion?", then you will take the left branch here. You only have to have made ONE of the above decisions to get sent down this branch. If you met Uzuki in the scene titled "Moto no Saya", take a right.
In the scene titled "One Leisurely Afternoon", there are two automatic branches. For the first, if you asked Sakuya for help ("Sakuya-san, help me.") in the scene titled "Tama Kezuri", take a right. Likewise, if you failed to paste the charms and instead worried about toiletries ("Did I brush my teeth?") or called Youko ("I'll give Youko-chan a call.") in the scene "According to the time, just before tomorrow...", also take a right. In other words, take a left only if you saw the scene "She saw my sleepy face..."
For the second branch, this involves the choice you made a moment ago, in this same scene. If you chose to "Make her go" and she stayed, take a left. If you chose "Proposal withdrawn.", take a right.
Last, but far from least, there are two automatic branches in "The Oni Slayer and the Oni". For the first, if you chose to "Get in Kei-kun's way" in the scene titled "The Oni and the Oni Slayer", take a right. If you picked the other choice, take a left.
For the second, if you chose to "Get in Kei-kun's way", take a left, here, in the exact opposite direction. Otherwise, take a right.
Sakuya:
Not yet complete.
Tsudzura:
Not yet complete.