ｘｐｅｒｉa 10 ii (so 41A)
Search for LineageOS-based custom ROMs 1st:
If any available, post here to help builders.
Certainly xda has a custom rom for the xperia 10 ii.
However, overseas xperia and Japanese xperia are a little different.
I want a custom rom for Japanese xperia 10 ii