Oi, poverty god.

Well,

no matter what anyone says

Number one lol.

Gensoukyou's number one cutest little sister has got to my Flan don't you agree?

Gensoukyou Older Sisters' Get-Together

number one would obviously be my Koishi.

Hmm?

Hah?

Don't just sit there quietly, come join in.

That's right.

No, while your younger sister is most assuredly cute,

This is where you should be jutting in「Hah? The cutest would be my little sister」