By sheer coincidence, Seijiro's
niece being born (omedetou, Onii-san-tachi~!!! ♥) and his related
vocab!fail made it extremely easy for me to look up something very amusing I heard in the second Haruka10nenMatsuri disc this morning.
"Shall we run a joint attack for this, ご甥っ子殿?"
"Ngh, yamero, kimochi warui..."