Ok, so like, this needs context because context is everything to me.
So, this happens after Usagi and Mamoru's curse was sped up, Helios manages to save them and take them to Elysion where he tells them of a vision he's seen that speaks of a warrior and a maiden protected by moonlight that could melt the seal (on the golden crystal.). He also speaks about Mamoru's past-self and why he's connected to Elysion and how this all functioned between Mamoru and Usagi being the bearers of the Silver and Golden Crystal respectively.
At this point- both of them are
not afflicted with the curse. Elysion has healing powers too, and basically helped purify both of them while they had been asleep for a short time.
Anyway, so after Mamoru's powers with his crystal awakens, they get sent back to the surface, which is plagued by Nehellenia's powers.
Then they do Moon Crisis Make up.
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My working and forever Theory is that Because Mamoru never actually had -words- to his transformation, saying Usagi's while being connected to her probably works out about the same. Especially since the theme of the Arc is all about Mamoru coming into his own with his own crystal to be as equal as Usagi.
He's never had a transformation call and his crystal is still a new thing for him to use- so it's not that he's heavily burdened with the curse but I think he was caught up in the moment feeling stronger than he had been before.
Mean, if you look back before that page a few:
- Spoiler:
In the upper left Corner, Helios noticed Mamoru's crystal and how it's starting to glow. He's not surprised by Usagi - It's Mamoru that's starting to use his actual powers.
It's well known and established that Mamoru and Usagi holding hands, holding each other, focusing their powers brings about more powers and become more powerful because of their unity.
So yeah, Mamoru used Moon Crisis Make up in the heat of the moment. In fact, look back at the other arcs, he almost always transforms alone or just arrives to help. We never seen him and Usagi transform together before so this is a first too.
My other working theory is also that because Mamoru does not have an item (Like a Brooch, a transformation pen/stick and ect) that he cannot actually access his powers fully and since he's never had a guardian or anyone else back him often (except himself...from the future. His friends are all rocks.), it probably stunted his powers up until then.
So being with Usagi, always being connected to her, and their love for each other- it probably helped him learn via through her some of what he's supposed to learn anyway.
-coughs- <<; sorry for long winded speculations but I just really really like Mamoru xD;.