User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-14.201.211.143-20150720115807/@comment-1359322-20150720120352

This form can only be achieve using Great Red's flesh. Great Red only contributed to the flesh during the creation of body, Ophis was the one who contributed to the power, hence this form is a combination of both what Great Red and Ophis gave Ise.

That's the reason why this form is organic and has four wings.