Melty Blood Actress Again is the fourth game in the series and the first with a сontinuation of the storyline. Speaking simpler: this is the first sequel, not a re-release or remake.
Powered (or "Powerd" according to the game) Ciel was a variant of Ciel that was planned to be in the original arcade release along with Ryougi Shiki, but was left out due to time constraints, and still couldn't be finished in time for the PS2 release. This unused image of her was all there was of her in that version. She was eventually finally completed for the PC Current Code version.
Winning quotes
A file containing all the quotes for the character was left in the game's files as well. Surprisingly when the character was completed and added to the Current Code-onward (Sega RingWide / PC releases) the file remained unused, with a different one being made in its place. For some reason, despite being unused, its text was translated in the English PC release.
255 0 0 Jeez… You got hurt because you just had to resist. ■If you learned your lesson, try and behave yourself.
255 0 0 Alright, it's finished■Neither one of us want to die, right?■I'll let you go this time, so be sure to repent, okay?
255 0 1 This is the difference in strength between us.■Do you understand that my title as the 7th member of the ■Burial Agency isn't just for show?
255 0 0 Holiness… I am an agent of my lord's spirit.■Okay, execution complete. I'm hungry, time to head straight ■for Messiaen!
255 0 1 That is the end of this fight.■Use the rest of the time you have to repent.
255 0 1 Oh, are you done already?■You sure talk big for quitting so easily.
255 0 1 …Phew.■I must praise you. You were quite the strong opponent.
255 0 0 …My robe tore again.■Oh dear, this is the seventh one this month already■Seven, I leave the sewing to you.
7 0 0 A healthy, upstanding citizen shouldn't be walking the ■streets late at night.■…Now that you've reflected, how about you come over to ■my place, Tohno?
1 0 0 Are you done already?■You really are slacking. This is what happens when you let ■Tohno do so much for you!
3 0 1 …That's it? I am surprised.■For you to be able to fight against me without any combat ■training. If you leave that strength untrained, it will be the ■end of you, Akiha.
255 0 0 You're still inexperienced and you won't get anywhere by ■rushing things. How about you go reflect on this over the ■next two days?
255 0 0 Oh, you're finally giving up.■The next time we meet, I'd like to spend our time a little ■more peacefully.
255 0 0 Oh, my robe feels surprisingly light・Perhaps I've used too many Black Keys.■Seven, was our budget for the month completely used up?
255 0 1 For demons to be affixed to you is a trial of the heavens. ■Now disappear, heretic. You have fallen off the scales of ■judgement.
255 0 1 Though my powers are gone, I am still the seventh ■member of the Burial Agency. You cannot kill me.
1 0 1 Our fight still isn't settled, I see.■If possible, I would sure wish we can just end it all with ■both of us staring at each other only.
17 0 1 I'll let you go this time, but not again, Yumiduka. ■If there's anything you regret, be sure not to face me ■before fixing them.