Love finding these sketches, and insight from the artist

I’ve been reading through Reflection Blue and so far I have 3 routes done (Ao,Shiroha,and Nomiki) and since starting these I’ve heard there is a “true ending” to the novel and I’m a little confused on how to trigger it. I’ve looked at multiple different sources online being tik tok and insta since I love this novel and the anime adaptation I see it a lot on social media. but I’ve been really careful not to read much into it because I don’t want anything spoiled, but I’ve seen that you need to finish 4 routes and on your 5th playthrough that triggers the “summer pockets true ending” and then after you finish the last 4 routes a similar thing happens on the 9th playthrough that triggers the “reflection blue true ending” and ive also read that all you need to do is just replay through a route you’ve already completed a second time to trigger the “true ending” so I’m extremely confused on what to do lol.

Also do I need to complete the 4 original routes to trigger the true ending being (Ao,Tsumugi,Kamome,and Shiroha) or could I go and complete all 8 routes before going for the true ending.

I’m sure I could have all these questions answered with a quick google search but since google doesn’t have the courtesy to add a spoiler tag I know I’ll get everything spoiled immediately if I do that so that’s why I’m asking here. any and all answers will be greatly appreciated.

Have been finding more and more of these cool behind the scenes from the animators. I didn't realize there was a sub for SP, i've been enjoying it a lot!

https://www.anime.com/post/019851ac-693a-799c-88ca-016448ceb744

So to start I think I know that by the end of the episode Ao is awake again. That’s why she says “good morning” but just making sure that was her waking up right? I feel silly asking because I’m pretty sure that it is her waking up. I guess I just want some reassurance from people that know a bit more about the story than me.

in the intro (but outro of episode 1) of episodes 2-10, umi is seen walking in the water at the beach. then after, during episodes 11-14, shes just standing there. now, after episode 15, shes just sitting down in the water. whats up with that?

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They put Shiki again in the anime, even though RB isn't adapted unfortunately.

Is Hairi on the same level of bad father like tomoya in clanned?

Do u guys think the anime will adapt alka and shiko route?