Here are my thoughts (they're not in order; think of it as me as just rambling on whatever that comes to my head first. xD):
- Ryu. Ryu, Ryu, Ryu. Why are you so freaking adorkable?! ;w; While I'm personally opposed to him provoking Kaius every time (and his reason behind doing this), I can't help but love him the best, lol! I guess it's the SuzuKen vibes I get from him? Haha, all throughout Ryuu's route I kept thinking, "Ohhh, this is certainly one of those SuzuKen's roles!". I honestly think that if Planets was ever made into an anime, SuzuKen would be the perfect fit for Ryuu~ xD
- I guess part of his appeal to me is that he seems to have the smoothest lines. Like, I don't mean it as him being a total pimp or anything, but more on the fact that he speaks naturally. Most of what he said, I could easily imagine someone in real life would say, and I really like that, haha. I felt myself blush when Ryuu was like, "I'll give it a B+" after they kissed. It was just too cute...! Also when they hung out by the rooftop and he was all "can I have my good night kiss?" when they got back. vvv Just...awww! ;w;
- I'll probably sound repetitive, but I just have to say that that swing confession scene was so adorable! ;___;
- Hands down, I really think that Marin and Ryuu fit together the most. They just click, period. xD
- This is just a nerd moment: There was this one CG (I think when he fainted after his fight with Kaius) where I thought Ryuu looked so much like Snake from 999. xD I suddenly had flashbacks of Snake/Clover in the game, lol.
- Even now I'm still curious about what kind of book Ryuu was hiding from Marin because it was never addressed ever again. I want to know what that is? xD; /feels oblivious
On Kaius:
- I think if there's one thing that you should know about me, it's my dislike for this type of character: you know, the rude/cold one. This is part of the reason why I played him last, but gosh darn it you made me love him in the end. ;____; I swear, that blushing face he makes...!! So adorable!! vvv ;w;
- The way he goes "so cute..." when he sees a cat and him mumbling the word "date" lololol = <333
- During that one time when it was raining and Kaius was going to go eat lunch somewhere, I honestly thought he was going to go out to do something with the kitties...I was sad when I realized that that wasn't the case at all, and it made me wonder what happened to them (because they weren't addressed ever again after Marin discovered them). ;__;
- His shyness when it comes to love/relationship...is actually so moe. ;w; Definitely my type, haha.
- Oginuma-sensei's way of conniving Marin into getting closer with Kaius to get a higher grade, awww, B> Oginuma-sensei to be my dad. ;__;
- The kissing scene was so cute I think I melted lol. And a huge LOL about the whole "thing" hahaha...! Oh gawd, lol.
- I named my cat Nyan Cat, by the way. Sorry, I couldn't resist, lol! xDD
On Lucan
- I played him first because kind guys is usually my type when it comes to games like this (Yes, I know, I'm weak ;__; ). I still love Lucan, but between his shyness and Kaius's...the latter was definitely more moe for me. I'm so sorry, Lucan! ;__;
- The date scene, gosh! "Of course...I want it to be a date..." ahhhh so adorable! <333
- I got the true ending first but went back to get the other ending, and I have to admit I got scared of Lucan when he brainwashed Marin in the end. I mean I kind of expected it to happen when I saw him approaching her the next morning with that neutral face, but what scared me was the fact that I knew it's going to happen and I can't do anything to prevent it. OTL;; I honestly thought that was a good ending--it was a good insight of Lucan's character (and his fear of rejection). I liked it.
- I was sad when he got expelled; while I understood the reason why he would be, I thought that he could have honed it/learned to control it by remaining in Planets, especially with someone with a dangerous psych like that, he might be manipulated/used by the government for their own good. But that's just me overthinking. ;__; I wonder though; did Ryuu ever find out what his best friend did after he got expelled? :,<
- Ahh, maybe I'm a little biased here because I have a feeling that Lucan is the most underappreciated among the cast, but I was really happy seeing that his ending (not the epilogue, just the ending of his route) was the most unique out of the main three (in which the others all ended up sleeping on Marin's bed). vvv Granted, Lucan has a reason for not being able to do that considering that he's already out of Planets anyway, but still, haha. Made me happy~
- It's kind of adorable because I could definitely see a parallel between his sisters and one of my characters' sisters. So cute, so cute! xDD
On Haruhi:
- I don't know if you ever mentioned the canon pairing (or if there's one to begin with), but Haruhi sort of gives me that vibes for some reason. xD I guess it's the the star bracelets and how you seem to use the stars as a motif in game, but that's just probably me reading too much in game. >.<;
- I like how you treated his confession to her realistically. I honestly think that if Marin flat out just accepted Haruhi's confession, I would have been very disappointed, but I'm glad you took realism > what otome gamers would want when they play otome games. When she has treated Haruhi like a kid/girl for all of her life, I'm pretty sure Marin would need some adjusting first in order to accept his feelings. But nonetheless it was so cute. vvv
- I have to note that your coloring on kid!Haruhi and kid!Marin was very, very nice! I really like how soft it is. vvv /artist nerd moment
-Oh, guy!Haruhi was boyishly cute...! I wanted to hug him. ;^;
That said, I think my minor gripe about this game is that scene before she leaves Planets. There was basically no difference whatsoever in their reaction (apart from Lucan's absence when you're in his route, of course). When I was in Ryuu's route, it almost seemed like he wasn't saying goodbye to his own girlfriend because he sounded very platonic throughout the exchange, and Kaius not being present during that time in his own route; it made me sad. ;__; Also, Rui asking Marin to go shopping with her but they never really got to do it (though I guess Rui got too occupied with Lucan/Ryuu there, lol).
Other than that (and the occasional typos), I didn't really have much problem with it! I'm not sure if anyone else already mentioned these because I didn't read the comments you got (out of fear of getting spoiled), but in case they already did forgive me for repeating them all over again! OTL;;