Just here me out here:
What if Chi's hair is that color because her dad is Dexter?
We know Aku can take female form and though he himself ruled a future which was highly technological, the tech in this future could have been envisioned by Evil Dex.
Of course, he was supposedly good until World End and Mimi doesn't look aged much but she might be older than she appears, which allows time consistency.
Tenshi Nova: Yo Krest, new best buddy! Come give me a hug.
Blood Lord: May whatever God you pray to save your ass when BR reads this, Krest.
Havoc: For the love of Christ & his next-door neighbor Frank! You've successfully pissed off someone with the power to ban a Mod!
BeeAre: you are breaking new bad ground. breaking bad. meth. you smoke meth.
Ari-6: Oh no! Krest's patented sense of humor! What ever will we do without it!?
Randori: Welcome back Krest. Was wonderin' where your goofy ass went.
"I like to think, to read. I'm into freedom of speech, of choice. I'm the kind of guy who'd sit in the Greasy Spoon and think, 'Gee, should I have the T-bone steak or the big rack of barbecued spare ribs with the side order of gravy fries?' I wanna smoke a Cuban cigar the size of Cincinatti in a non-smoking section. I wanna run around naked with green jell-o all over my body while reading a Playboy magazine." - Edgar Friendly