I'm not a huge fan of Ramen Sora's interior, which is far too dark and spacious for a ramen-ya, and their staff is a bit too lukewarm for the sitdown restaurant look. I don't like the vibe here; if you're looking for the energetic, late-night bustle, you'll find happier places with happier people.
What I do like is the miso ramen, though.
Ramen Sora is Sapporo-style.
Sapporo-style is Miso Ramen.
MISO RAMEN!!
That is all.
(No, really. When all you care about is getting a glorious bowl of miso ramen, just order it from Ramen Sora, super-size.
Skip the chashu. It's unimpressive, and pops up awkwardly in between mouthfuls of miso. Don't suffer the distraction.
Gyoza's good. Get the gyoza. Get two orders.
Oh, and don't forget the green onion and seaweed.)
Closer to a 3.5, but rounding up because best miso ramen.