Zero445

Honestly they were a bit of a disappointment for me. I only liked one or two of their songs. Art cube was better.

I'm with Lichtlune, they were a bit of a disappointment for me too :/
Now we can look forward to the comeback of art cube (?)

Technically speaking, any song which stays in the scope of particular key is somewhat easy to play once you get the gist. E.g. heavier Lycaon songs are usually done in Bm (which is not hard when done in drop B ), which makes them rather effortless sans specific Slash tribute moments by Satoshi (which require a bit more practice, frankly speaking).  Or the hell, majority of obviously nu metal-inspired fares in VK (DEG's six Ugly-WtD era as a case in point) won't require much from electric axemen tbh...
 
@sai is not necessarily hanging around here anymore, so I am addressing anyone with similar intents: in order to develop your skills in any kind of field, you need to look for "fittingly challenging" scenarios - or repertoires and/or specific collections in terms of musicianship. This means that you shouldn't necessarily go for "easypeasy" tracks but more or less "medium" ones.
 
Go for songs where you'd be somewhat able to realize specific influences and "rules" of the particular genre they are played in. A decent chunk of knowledge about keys, scales and other factors belonging to the basis of music theory will be as useful and perhaps even necessary before delving into the art and practice of rock music AND J-rock respectively (unless you aspire to become a wizard of djent/prog/avant wankery).
 
Tl;dr: if you didn't bother to read much of the stuff said above - my personal picks for each and specific style I could think of for an aspiring musician with enough patience to assess this songcraft:
 
Rock ballads:
 
- Gazette's Cassis (just play the chords, forget the Uru parts for a while)
- Dir en grey's Undecided (half-ballad but slow down a little bit and practice the (essential) chord structure)
- Luna Sea's ANOTHER (very accessible ballad from guitarist's perspective in a very rookie-friendly setting, go with this one for basic understanding about key changes etc.)
- L'Arc~en~Ciel's Pieces (assessment of Japanesque pop melodies requires you to get familiar with unusual concepts  like "Royal Road progression" etc. This ballad follows the said progression a little bit with its intriguing key and chord changes along the way. Fittingly challenging after two formerly mentioned tunages)
 
"Rockers":
 
- Penicillin's Romance (very distinct chord progression, moderate key changes, must-cover for almost every self-respecting JAYRAWK hobbyist)
- hide's ROCKET DIVE (descending/ascending guitar riff here shouldn't be hard to decipher but assess the pop punk aspect here - you will need it for oshare songs etc.)
- Kuroyume's Miss Moonlight (welp, kote/pop territory! Practice necessary hook solos for older and perhaps newer J-rock songs here)
- Janne Da Arc's Shining Ray (...deeper and deeper into the basic axeman shredding and riffage! Practice your essential progressions once again AND usage of electric shreds etc. here)
- Raphael's Hana Saku Inochi Aru Kagiri (in case you are willing to get familiar with doodlings for Bearsighs and other fast-paced acts, get used to this one)
 
Not exactly the most recommended choices here but I had to think of "coverable" numbers anyway! NOTE: practice standard/Eb tuning first - go for drop tunings only if you have to (since starting out with drops is blatant cheating/clear sign of laziness)
 

You seriously need to stop putting Dir en grey on this divine pedestal of yours, it's disgusting. I've heard countless Dir en grey covers on YouTube, and I agree that not many of them sound that great, but you're just being ridiculously close minded to even dare to state that there is not a single decent cover. Your problem is that you can't even bring yourself to believe that anybody else can play your precious deities' songs as good as they can. You can't sit there and tell us that Berry/Rasetsukoku/Grief/Cage/Kasumi (just off the top of my head) and their elementary riffs are "near impossible to imitate", simply because you can't accept the reality of it. Grow up.
Also, learn to discuss like an adult please. Throwing insults around automatically makes your statement invalid, and makes you look immature.
Predicted counter statements:
- "haha u mad?"
- "I DO NOT MEAN DAT! DEY JUST CANT PLAY WIT SOUL~ LIEK KAORU AND DIE!"
- "lol"
- "Miasma=0 Will=1 godzilla.gif"
- "HAHA DATZ BIG TAK COMING FROM A (band that I like, that you'll figure out from looking at my Last.fm profile)-FAN!!11!

Almost anything by Madeth Gray'll because it's pretty much the same chords over and over for 4 minutes. Just add killing babies sampling.

Just a well meant advice: don't force yourselves too much on writing japanese lyrics. Being able to sing it is fine when you cover original songs from that time that are japanese, but I think that anything else (such as self composed somgs) will fail for a few reasons. First, most people who are in vk bands can't properly speak japanese. Second: it will make you look like weaboos who are trying too hard.
And a personal reason: I would like to see a foreign visual kei band who can add something of their own culture to the whole thing, both visually and musically. I feel that there's a lot of potential here and it isn't as appropriative and potentially embarrassing as people trying to appear asian. Show us that also non japanese people can rock it!
I am pretty sure you can translate the old school style and vibe into English for example.

Well... I wish you good luck though on finding band members. I'd would join a kote kei  band anytime, but I can't play a guitar and even I'd do I would be terribad.