I genuinely like Kaoru when she's like this, genuinely cute.
But this is why her sister is better because she's cute all the time with moments of being a chad instead of being a vampire.
Lol same! These comics are the only time I genuinely like Kaoru. She very clearly loves her little sister, and even though she's mostly useless, as Honoka says, she's a really good big sister when it counts, like when she uses her wish for Honoka in the new year chapter. And we see in another chapter that Kaoru is (so far) the only truly loving and supportive family Honoka has- even the mother, while she doesn't seem neglectful, seems to compare her to Kaoru.
I loved the chapter where Elisha pushed Honoka into making her blush (for heat or whatever- it was a shameless excuse, lol). She was just channeling pure Kaoru (other than height and vaguel hairstyle, that's the only time I've really seen the resemblance between yhe two), proving there's just lady-killer blood in the Yamada family genetics.