Ah, CLANNAD being a "hunting VN" Tiago mentioned makes sense, along with his recommendation to just watch the anime. There's a lot of fluff to the VN in general, and the gamey route trial and error yo-if-you-got-nothing-else-better-to-do,-especially-back-in-200X,-then-you-might-as-well-just-grind-this-VN doesn't really hold up by today's standards.
Ryou+Kyou's routes actually highlight the hunting-ness of this VN quite well. I spent the longest time ever trying to get Kyou's end. Ryou's was easy enough, because Kyou literally spoonfeeds you everything and if turns out you gots the hots for Ryou you can climax so quick it feels anticlimactic.
WAIT, REMOVE THE R, I WANT TO PAIR UP WITH YOU, NOT RYOU!!
...But should you listen to your heart and lust for Kyou during the Pairing You Up with Ryou Plan...
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Yukine Miyazawa. Who the heck is this nice girl, just chilling around the Reference Room like a side character but actually having a dedicated route if you harass her enough?? She totally is a symptom of VNs trying to bump up their route/heroine count back in the day!
Yes. The other day I tried to get together with this girl- Kyou, but it turns out she was trying to get me together with her twin sister, Ryou, and then there was this rodent whose problems completely overshadowed my relationship with Nagisa...
But she's nice enough. Apparently she's so nice, she has amassed a sort of following- a bunch of well-meaning delinquents who would come visit her in the Reference Room every now and then to just vent about their problems while she would just stand there and listen.
Tomoya also gets enthralled by her pleasant charms, and finds himself coming to visit her more and more...
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Mei Sunohara. Huh? Sunohara?!
-SHUTS THE DOOR- NOPE. I'M TURNING OFF THE VN NOW. ANYTHING SUNOHARA-RELATED BY DEFAULT MUST BE TOXIC- Huh? You're telling me you have the same VA as Rinne from Island? NICE TO MEET YOU!!
This is the writers' "Hey let us finally make you appreciate the bro side character" route where they bring out the big guns and throw in his kawaii little sister where you're like, there's no way these two are related!
The lengths Mei goes to to bring Youhei back to his glory days was touching.
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Idk all the available routes, but uhhh Nagisa, Tomoyo, Kyou, Ryou, Kotomine, Fuko, Mei. Probably gonna try to do Kotomine->Tomoyo->Nagisa. Overall VN's looking really subpar-average, I still can't fathom just wtf can happen come lategame to 9+/10 tier this.