>>49500397
By showing himself through Okina, Matarajin know what he was getting into. Whether tantric sexual practice actually happened in Tendai ritual don't really matter as it is now part of the greater Matarajin's myth and sexuality is one of the aspect of him that shine through his Okina avatar. Of course, Okina as a character is more than her sexual appeal, but you can't deny that side of her.