These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
What an Idiot: Guren gets mind-controlled by Ryuusai and ends up fatally wounding Seimei against his will. Then the shikigami arrive to observe the scene You'd Expect: The shikigami to go after Ryuusai and do him in for mind controlling Guren and convincing the latter to understand that it wasn't his fault. He was being mind controlled. He didn't intentionally do it, not on purpose! They'll understand, right? Instead: They outright assume Guren did it on purpose and, despite Seimei surviving, blame him for it without even bothering to ask him what really happened, and hold it over his head for freaking DECADES!!! The Result: Guren develops severe self-esteem issues and is completely shunned by the other shikigami despite Seimei's objections, even to the point of deriding Masahiro just for being friends with him!
Suzaku and Tenitsu as well, when episode 21 and 22 come around.
Guren. Oh God, Guren! He was mind controlled by Ryuusai and forced to kill Seimei against his will! Once he snaps out of it, the Shikigami arrive and see what he did, and what do they do? They immediately think he did it on purpose and turn against him, not even giving him the time to explain/clarify the situation! How can you NOT want to hug poor Guren?