I literally came up with this on the spot and it sounded good in my head--

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Aegeus: Kas-u-miiiiii~! *runs over and hugs her from behind and smiles*

Kas: *winces and looks over her shoulder at Aegeus and sighs* What do you want..

Aegeus: *hums happily and looks over at Ayu and gestures her over which she nods and walks over* Let's braid each others hair!

Kas: ..I don't know how to braid..

Ayumu: *smiles* It's ok Kasu-chan! You can be the one not braiding while I braid your hair and Aegeus could braid mine! *grins*

Aegeus: *nods* and I can always braid my hair myself so~

Kasumi: *sighs* ..Fine-

*after braid train is finished*

Kas: *has a really good braid in her hair that sweeps over her shoulder and has a pretty visible blush*

Ayumu: *always has braids so she looks no different*

Aegeus: *eventually braided his own hair that just goes behind his back instead of over his shoulder*