User blog comment:Xilinoc/Ch. 671 - The Perfect Crimson 2/@comment-11293956-20160421143608

....well damn. That was one hell of a chapter. Really loving this new sexy Hitsugaya. Him aging himself to control his Bankai makes some sense. I guess he didn't want his body to splode like Gremmy and Kenpachi. The elemental power up seems similar to the one granted by Zanka no Tachi. The whole flash freezing seems fitting for the most powerful ice-type zanpakuto in the soul society.

Regarding Byakuya, he definitely redeemed himself in my eyes. Senkei is just as merciless as ever. I recall someone commenting last week about the possibility of Byakuya having new Bankai techniques and using Senkei again. Didn't Byakuya claim that this wasn't what this technique was made for? It was a weird thing to say seeing as he has control over the blades and has the ability to launch an attack like this.