Guys, seriously, read the post with attention and you’ll see what things the Sei’rim can help you with.
If I haven’t said literally every single thing they specialize in, that’s because I don’t have the time to work with them like that. There’s no way I would know everything they’re capable of.
With that being said, I recommend this: got any doubts about the spirits and what they can do for you? Summon them on your own and find out. Ask them, talk to them. If you can’t make contact yet, then you have to go all the way back to level 1 and work on your psychic senses until you develop them.