Title: Not a big sister

Plumeria: Commander, if you ever feel like getting pampered again, Plumeria will be your mama whenever you want.
Mitsumata: <Plumeria as a mama, huh...>
Mitsumata: <What I want is older brothers and sisters, so maybe Plumeria doesn't fit...?> Hmmm...
Plumeria: Mitsumata, is there anything you're worried about? <You went "Hmmm"...>
Mitsumata: Wha!? No, nothing really... <I did that out loud...>
Plumeria: I'll pat your head, so cheer up! Pat, pat... ♪ <patting>
Mitsumata: Eh...
Mitsumata: Ah... Ah...
Mitsumata: Mama...