>>20673607I'm down for this
>>20675966Ghosts in myths have been known to also be kept at bay by cold steel (and earth and pure metals in general)
Psychic powers are usually portrayed as bypassing tough defences, such as breaking walls or bending steel because they're unknown mental powers.
As for being SE against Fairy, I'd guess;
>Bug, Dark and Ghosts cause fear which clouds the Psychic user's mind, stopping them focussing>Its SE against Fairy since Fairy powers are playful illusions and lightshows, similar to what Psychic practices but with the bonus of mental clarity and focus to see pass their smokes-and-mirrors 
