Nanami wishes he could say he were happier about this.

It 's not like he isn 't grateful for the way Toji and Gojo agreed to train Yuuji in less than half a heartbeat, as if the desire to protect him was already coursing through their blood; it 's the fact that any of this is even necessary in the first place, that Yuuji is doomed to face perils that could cost him his life. All Nanami can think of is that bedtime story he told Yuuji back then, how he 'd rewritten death and tragedy into a wondrous fairytale, and how that curse tore down the facade of happily-ever-after to reveal the ugly truth.

He 's wielding a special grade weapon and he 's seven years old. It makes Nanami sick to his stomach.

So if he 's decided to participate in Yuuji 's training sessions himself, well. Who can blame him?

'Nanamin, look! ' Yuuji says, swinging Playful Cloud around like a helicopter, so fast Nanami is almost surprised he isn 't carried away.