>>281412638
Maybe he wanted to do his own official Gantz lewds like Hagiwara did with Bastard!!!? I imagine he'd especially want to do Reika ones. He did have a career as an H mangaka.

>>281413133
We'll never know so this is just my headcanon, but I guess the pseudo Gantz suits were the invader's attempt at reverse engineering the enemy's tech after witnessing the astounding effectiveness of Gantzers on the battlefield when worn by mere squirrel people.