With the exception of two, I've collected every Kiki doujinshi produced. I WILL get my hands on that one one day, though, mark my words. For now, I hope you enjoy what I have so far.
KiKi/Beni Fujiwara
As far as doujinshi goes for the FFVII fandom, there are lots. I kid you not. In my eleven years of having the internet, I've never seen a fandom with more doujinshi than FFVII. Good reason for that, too, y'know.
Shining out amongst other doujinshi circles is KiKi or Beni Fujiwara, whose stark, gorgeous artwork and psychologically centered plotlines dazzle even those who can't read Japanese. As I've mentioned on other parts of the page, most--if not all--of Fujiwara's work focuses on the psychological aspects of Cloud's personality, as well as his relationship with Sephiroth. I won't lie--most of her books are intense, and very graphic. Just how I like it. Anyway, on with it!
Note: Once again, aside from very little kanji or Chinese characters of any sort, I cannot read Japanese. If someone would like to translate some of the doujinshi that hasn't been translated yet, then I would love to scanslate it and we can share the credit!
Zilch #1
Publish Date: (First release) 2005 Dec 29, (Second release) 2006 Mar 19
Pairings: Implied/brief Sephiroth x Cloud; otherwise, none.
Rated: PG-13
Pages: 68
The first publication in the Zilch series, this book is gentle and is dialogue
focused rather than visually focused--the art is still beautiful, though. There
are almost no yaoi scenes save for a brief imaginary encounter between Cloud
and Sephiroth towards the end. I had a Korean friend of mine who happened to
read Japanese give me the run down. In the first few pages, you see Cloud visiting
Elmyra Gainsborough after visiting Aeris's "grave" at the Forgotten
City. They chat about Aeris for a while and Cloud becomes anguished for letting
Aeris die. Conversations with Tifa and the children ensue. Cloud seems very
depressed and keeps seeing Zack and Aeris look disappointed or upset with him.
I really am not sure about this one. If anyone can translate this all the way
through, let me know--it's a very long book though.
Zilch #2
Publish Date: 2006 Aug 11
Pairings: Sephiroth x Cloud
Rating: NC-17 (gore, sort of non-con, dark)
Pages: 64
Number two in the Zilch series is one of my absolute favorites, one of the main reason being the front and back cover and the symbolism that it carries. This one I did not ask my friend to translate because he wants nothing to do with yaoi, and this one is notably one of Kiki's more hardcore works. From my understanding, Cloud has flashbacks of being a child, and being rescued by an older Sephiroth. In the present, he is haunted by images of Zack and Aeris--who he may feel like he betrayed or let down--and seems unresponsive when Tifa and the children try to talk to him. He goes off somewhere, musing about Sephiroth when he gets stabbed in the side by the masamune blade. Injured and weak, Sephiroth strips him, taunts him, and coerces him into sex. Cloud comes and has a revelation of some sort; the scene ends with the flashback of young Cloud being rescued again.
Zilch #3
I have the scan of this, but I do not own it myself, nor can I find it. It's
driving me insane. Help me, someone!
You may find it at Gongaga Yaoi.
Idea
Date: 2007 May 04
Pairing: Sephiroth x Cloud, solo Cloud
Rating: R (gore, masturbation, very depressing)
Pages: 46
My roommate (who does not share my interest in darker things) claims this to be her favorite. This book takes place in a more dreamlike world (hence the title) where Cloud seems younger than he does in the AC-based KiKi publications. The beginning starts off with a confrontation between Cloud and Sephiroth. Cloud is dressed the way he was in Kingdom Hearts. (I've never played KH, so I don't know the significance of that.) Before the battle is over, the story cuts away to Cloud talking to Aeris in a flower field about... nothing, really. I can't quite describe it. Aeris puts a flower in Cloud's hair and giggles at how cute he looks. Anyway, the battle with Sephiroth resumes; Cloud gets his ass handed to him, and Sephiroth impales him through the stomach. While choking on his blood, he is kissed by Sephiroth. After this scene, we see Cloud in a room with one small table and a flower in a glass, perhaps the same type of flower that Aeris placed in his air earlier. As he touches it, it withers and dies, which alarms him. He then hears Sephiroth behind him and... well, you should probably just read the doujinshi. The story behind it has a lot to do with the duality within Cloud, citing "light" and "dark" as two sides within him, the dark being Sephiroth and the light possibly being Aeris.
This doujinshi has been scanslated. You can find the link here. On a side note, I do not like the job they did (they're not native English speakers), so if anyone wants to do it over and put it up here, I'd be more than willing to host it.
Zangan ("ruins," or "wreckage")
Publish Date: 2007 Aug 17
Pairing: Sephiroth x Cloud
Rating: NC-17 (sex)
Pages: 34
Zangan was, for a long time, my favorite. It's primarily a sad, romantic story revolving around Cloud and his old relationship with Sephiroth when he was in the army, and the emptiness he feels from losing it. While out on a delivery, he gets a strange call and heads to the old Shinra Headquarters ruins, where Sephiroth is waiting for him. Cloud is at first hostile, but Sephiroth seduces him into letting his defense down, as he means no harm in the first place. They proceed to have sex, while Cloud muses on how much control Sephiroth has over him, as well as how intense his feelings were for him. At one point, during the climax of the sex scene, Cloud mentally surrenders himself to Sephiroth. The last couple of pages show Cloud sharing a romantic kiss with Sephiroth, and then in the present, leaning back against a wall, reminiscing of spending time with Sephiroth as a young soldier, indicating the the encounter was a product of his imagination.
Positron
Publish Date: 2006 Oct 17
Pairing: Remnants x Cloud
Rating: NC-17 (rape, group sex, blood, psychological, extremely dark)
Pages: 40
By far the most disturbing of Fujiwara's creations, Positron stands as my favorite. The book's beginning is similar to that of Advent Children's, except rather than engage in a battle with Cloud on motorcycles, they catch him on a day that his geostigma is flaring up very badly and kidnap him. Cloud faints and wakes up to realize that his hands are bound, but is helpless due to the severity of his illness. Kadaj mentions that he despises Cloud for being Sephiroth's "favorite." Interpret that as you will. In the meantime, he makes the suggestion that they gangrape Cloud just for fun. The rest is really just one big, graphic, violent porn scene. One remnant holds Cloud's arms while the other remnant rapes him. The geostigma, the psychological trauma from being raped and the physical pain caused by both is resulting in Cloud losing self-awareness. He hears Sephiroth's voice taunting him the entire time, yet the more he hears it, the more compelled he is to give in to the will of the Remnants, for they represent Sephiroth. Finally, as he's being raped by two Remnants at once, Cloud "sees" Sephiroth's smirking figure and reaches for it before passing out.
Once again, this one really isn't for the light-hearted. Fujiwara does an awesome job at recreating human facial expressions, almost to a point where it's too intense. The visual and psychological content was way too much for my roommate when she read it.
Naked
Publish Date: 2007 Dec 29
Pairing: Sephiroth x Cloud
Rating: R (oral sex, underage Cloud)
Pages: 22
Kiki's shortest work, but just as beautiful. I haven't seen a translation to this one, either. Follows a short period of time when Cloud is in the army. Apparently he is Sephiroth's lover, but misses formations because of it. I'm not sure, but I think Sephiroth uses his rank to get Cloud to continue to disobey others' orders and have sex with him instead. (This is really hot since that's way illegal in the real military.) In addition, it seems that other people "talk" about Cloud. That's really it; it's a very short volume. Though, some of my friends have expressed concern that Cloud looks like he's twelve and it freaks them out. I totally understand, but I enjoy this one because of the military aspect of it.

Code-C
Publish Date: 2008 May 03
Pairing: Sephiroth x Cloud
Rating: R (gore, sex)
Pages: 46
Kiki's latest; I grabbed this a week after it came out and haven't seen anyone with it. I have no idea what this one is about at all. I can't even make speculations. I know it must have something to do with the experiments. There's a scene where all of a sudden the wound in Cloud's chest that Sephiroth made bursts open and Cloud has a psychotic episode. After that, Sephiroth shows up and screws Cloud in a really uncomfortable position, while he's bloody. ...Yeah.
One of the last pages says "incomplete" on it. I can't read her authors' notes, so I don't know what she means.