Not knowledgeable with mangas.
Oooku is not well-known but majority of readers have their two thumbs up with this one. It loses in the popularity contest yet considered a gem to those who’ve read.
Meanwhile, Freesia is the opposite. They’re both good and shouldn’t be compared.
It’s a great read both of these.If you’re sick with fluffy feels, a good heavy and serious works such as these ones are perfect balls to catch.