Sempai!

And pretty lewd, too...

Erm... Take a look!

It's the Fou-san outfit that was prepared for a previous festival!

I thought this would be good for a costume too - what do you think, sempa-

Too cute for words...!! ぐうかわ is a contraction of a longer phrase meaning 'so cute that you're at a loss for words'

Rider Class-limited Mario Kart Club