So an friend of mine and myself would like to start a co op campaign as both samurai factions that are aligned to the Jōdo Shinshū faith. But the problem is the major Ikko Ikki faction is the only faction that has this religion currently.

Now we found out that within the: Expanded Japan (97 new regions, 101 new factions, 22 playable factions) mod there are two other minor factions within the Kii province that do have the same Jōdo Shinshū faith.
Link of the original mod:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=150812711&searchtext=Negoro
The Kii province is split within the mod into Kii (owned by Saika), Negoro (owned by Negoro-gumi) for me and my friend it is great because we start next to each other and is useful to help each other out. The problem is that the Saika clan and Negoro-gumi clan factions are not playable unfortunately because they are minor factions...

Now I am not a modder myself but I would really appreciate it if somebody could help us with this making the factions Saika and Negoro-gumi clans playable. Basically as a submod for the Expanded japan mod. Any help is greatly appreciated!