Naraku was glaring daggers at him and Sesshomaru had no idea why. After the 'incident' happened, Naraku retreated to his room. There was a few crashes and colourful words that bordered on cursing but not quite (the spider was adamant that at least some part of him remained clean), then his door slammed open and since then has yet to stop giving Sesshomaru the stink eye.
"I take it that you now know what went wrong."
Silence. Continued glaring.
"And you believe that I somehow caused all of this?"
"Oh, I don't believe—I know it's your fault."
Huffing and puffing his uncomfortably heavier than normal chest, Sesshomaru inquired, "And how, pray tell, are you so certain?"
"Because magic in itself is a living but stupid thing! Why else do you think it requires to be wielded with very specific intent?"
"I still fail to see how this is my fault. Were you and Kagome not attempting physical transformation?"
"Magic is stupid on its own! You thought about Kagome in sexual terms—don't you even deny it—when we were attempting to cast the spell properly and her magic, untrained as it is, latched on to the strongest desires to be found in the room, and interpreted your desire to be inside a woman's body in the most literal sense possible!"
"…"
"We have a vagina because you were horny!"