Don't say such rude things...Eh.... Nacchan?
Nano?It's not break time anymore, you know...Millimetres!?Saying millimetres, you...She's about this tall!You haven't even changed a single bit...7 Years-worth of growthYou don't remember!?That's right!On the other hand, are you really Tsuttsun?That's when I was in 3rd grade!!Pi!I've gotten bigger by two millimetres!♪Hold your horses! There's no way that Nacchan would be that big, is there?It's me!
Nanakusa Nazuna!!She uses 'boku', the boyish pronoun