She can't completely get inside to put on weapons, only part of her body, anything in sight gets sniped off, in this case both of her legs.
She can't put in on while behind Koro, he must 'eat' her.
She already has been in Koro though. As in; her whole body. And Koro spit her out along with a weapon that is like ten times bigger than her or her nukes. [
And Koro can turn her backs towards Mine and then spit out the weapons or ''bite'' Seryu's arms. I mean, Seryu got multiple of her weapons out in the manga when they fought without actually having to use any of these two tactics.
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]And Koro can turn her backs towards Mine and then spit out the weapons or ''bite'' Seryu's arms. I mean, Seryu got multiple of her weapons out in the manga when they fought without actually having to use any of these two tactics.