The "traditional" portmanteau coupling name is "AnaPomu", where Ana dates back to before Yu was named and had to be referred to as "anata", and Pomu is an alternate character reading of Ayumu's name (like how Hanayo/Rin is KayoRin).
I'm not sure how I feel about chocolate ramen, but RinPana is sweet.
It feels oddly charming and intimate for Rin to suggest a half-serving for Hanayo — as if with anybody else she'd say something like, "If you don't eat the whole thing you're insulting the ramen!" but with Hanayo she understands her unstated concerns.
(I'm kind of fond of the ship, in a weird way. They have a good vibe in their canon interactions, and Koume's ability to inflict terror smooths out a little of the power imbalance. My headcanon of a relationship would be Koume with a crush she isn't sure what to do with, and Ryo mostly trying to be a friend but also not knowing what to do.)
Please inject the AnKira directly into my veins, thanks.
(I always thought they had a fun dynamic, but didn't start seriously shipping them until watching the "Ankira!? Kyousoukyoku" story from Starlight Stage — Anzu actually doing work, of her own volition, because she wants Kirari to be happy? Swoon.)
There really is an overload of idols named /Ri+na?/, yeah. There's these three, Love Live has a Rin and a Rina, Aikatsu has a Rin... BanG Dream has a Rinko, but both it and Aikatsu have a Ran, which may Mean Something. Further research is obviously needed.
(I'm pretty sure there's one or two Cinderella Girls doujins here with Rina and Riina out together on a double date; it probably helps that Natsuki tends to call Riina "Darii", or there'd be more confusion.)
She'd just taken a drink, and the drink had ice in it. It's not a "Oh, your tongue is always cold", it's "oh, your tongue has been cooled by your drink and is pleasant". (They're playing with ice cubes in practically the next frame.)
Oh, predicting Ayumu being jealous is easy -- even just in the anime up through episode 9, she's been visibly twitching every time Yuu calls someone cute or otherwise shows enthusiasm -- it can get worse in SIFAS (and I only know directly the world version, so through story chapter 18 and bonds through 20).
(I dearly love her bond chapter 19, where after an unspecified time of you/Yuu being too busy to walk home together, Ayumu actually follows her and bursts in on her meeting with someone, accusing her of cheating on everybody with a new school idol.)
-- absolutely no offense taken at all. Heck, part of my point was that it's very hard to pigeonhole any of the Nijigaku girls as copies of previous Love Live generations.
To slightly explain my -- rather forced -- mappings, the Rina ~ Nico bits are the way that they're both sort of "gimmick" or "persona" idols, and the Kanata ~ Honoka is purely the napping (I think Honoka mostly does hers in class, rather than afterwards). Even the Kasumi ~ Nico comparison is a little forced, because Kasumi really is that cutesy gremlin -- there's no personality she's covering by being "Kasumin~" -- and Nico's very much a put-on persona of the Greatest Idol in the Universe.
(A lot of my thought process comes about from somebody snarking on a Kasumi/Setsuna piece that it was both halves of Nico making out with each other, so the thoughtworm got planted and it came out here.)
To get back to this series, I so wish we had more! Hibari and Hina are teriffic, I can absolutely see 3yo Kotori being very indignant about the proper name of chun-chuns, it's great seeing Umi overwhelmed by the little sister attack, and it's wonderful to get the family-side resolution of the first-season ending.
(I'm honestly loving how, thus far in the anime (ep 6), Ayumu is still twitching every time Yuu calls one of the other girls cute, or is otherwise all enthusiastic at them — and then gets terribly embarrassed when Yuu calls her cute. Girl definitely wants to monopolize her childhood friend some, but is way too nice.)