Hi Roberto! Awesome work that you did with Lamu! Since you mentioned mugen, I was actually planning on making a Lum mugen character so I've been creating some sprites on my own, and so far I am ripping some from a couple of games like Urusei Yatsura - My Dear Friends game. I'm not sure if you could see the images
If you were interested in collabing, I could definitely turn her into a playable mugen character! All I would need for her is a few more sprites (a pallet) like kicking, taking damage, etc, and afterwards I would send you the finished file so you could upload it anywhere you want.
I'm not interested in receiving any credit honestly, I'm only interested in turning this project into a reality since it's been in the back of my mind for a while now, I just haven't been able to get around doing it since I had other projects and I didn't have a sprite sheet of her to work from. I'm primarily interested in doing this project since many people have been asking about it and I thought it would be nice to include her in my mugen roster. I'm all in if you are, and thanks for the post!