Common point #1

They both have blonde, wavy long hair.

Marimite's Shimako-san and Sunshine's Hanamaru-chan

Common point #2 Shiny first year high school students!

Common point #4 They are both close to people in the same school year who have big sisters with long, black hair and who have twintails

Oneesama-

Oneechaaan

Fufu-

Zura-

Common point #3... Both of them live in temples... even though they participate in Christian activities (Catholic school/choir)

I'm the daughter of a temple family, but I'm in the choir ♪

But even so, I'm not very good at choir...