[...] i still stand by my opinion that he isn't missing much by not having a raper that only works with one single victim, lol [...]
-Unique ability to switch between [two or three depending on anal/vaginal] different sets of raper sprites for a piledriver/mating press-style position at will, potentially up to four if modified.
-Unique ability to switch between two different sets of victim sprites for same.
-Unique system for progression of victim sprites/animations in that position.
-Unique impregnation cut-in.
-The victim in question is one of very few female victims with anal penetration sprites/animations.
Now, admittedly, the second and third points require a properly compatible victim, but these are still unique functions that exist in no other MUGEN character. I'm going to compare 1977 Kuromaru to several other rapers below, so I'll preface this by saying that their differences don't make any of these characters "superior" or "inferior" in any way; only different. They all have unique benefits and drawbacks, and ignoring or glossing over their unique features is a disservice to the time and effort their creators put into them.
You could argue that changing positions is common - and you'd be right - but no other raper can change,
separately and at will, between two different sets of victim
and raper sprites for
one position. The closest contemporary would be the missionary/mating press switch on CiroRawse/MugenFutaCharsMaker's characters, but that code can't call alternate victim sprites the way 1977 can. No other raper has the code to allow the player to change between vaginal and anal penetration, lying on back/on front, changing between vaginal/oral or anal/oral depending on the specific victim compatibility in place... there's a ton of potential here, and I think it's a damned shame only one victim was ever made that explores it. I've made a few half-baked attempts to modify victims myself, though I've made no significant progress beyond hacking a couple of sprites together. One could also modify Kuromaru himself to have up to four different raper sprites - potentially completely different characters - for each position. Dawnstar made a modification a while back exploring that possibility, though iirc some of the sprites for the transparency layer weren't altered to match so it's slightly janky.
You could argue that other rapers have functions that allow for progression of victim animations and/or unique animations for the victim in a similar style - also true - but none have the same granularity, detail and user control all in one package. Gettag's Brian, and most versions of Horuakuti's Kuromaru, have code to call [up to 3 or up to 6, respectively] different victim animations for each different position depending on certain flags, but all of them are very binary on/off state switches rather than the rolling progression - which can roll backwards, depending on what you do - that "1977" Kuromaru is built for, and take a little more effort to activate. Again, a huge amount of potential that has never really been explored. Sadly, the complexity that gives it potential is also the biggest obstacle to exploring that same potential.
[Multiple complaints regarding the quality and stability of 1977 Kuromaru's press animations]
A lot of the other functions are unstable or seem incomplete to me, but the press positions work fine on my end... with Petra at least.* It's wonky
without victim compatibility, but the same could be said of Horuakuti's Kuromaru. In fact, 1977 Kuromaru can call sprite group 12250 if the victim doesn't have proper animations, but Horuakuti's Kuromaru just fucks empty air in that situation. There are more victims that are fully functional with Horuakuti's mating press and side missionary than with 1977's anal press, but 1977 does not
absolutely require proper compatibility in the same way Horuakuti's does.
*Could be that it's meant to be patched onto a particular version of Kuromaru, and I was lucky enough to pick the right one? The most recent kuromaru_plus before 1977 seems to be... mugeryona1762? You could try applying the 1977 patch on that version, maybe that would help. I'll update my old infodump to mention it.
[...] Personally i would rather have the side missionary position than the anal mating press [...]
Anyway this is just my take on the matter, not THE opinion or anything like that, so take it as you will...
Of course - and the same is true of my position. For my part, I'm mostly trying to provide as much useful, relevant information to the discussion in as clear and detailed a way as I possibly can. Where the information that I have - or at least, my interpretation of it - seems to contradict your expressed opinion, I've noted so. As to preferring Horuakuti's Kuromaru over 1977... why not have both? A basic, uncustomised copy of MUGEN has limited character selection slots, but you can easily get screenpacks with several hundred, or with a little effort modify system.def yourself. (My copy of mugen-1.1b has over 500 character select slots, for what it's worth. Horribly disorganised since I never adapted my organisational system after expanding the number of slots many years ago, but it serves my needs.)