Okay, so this is set just after the Kannabi Bridge Mission in which Kakashi is transferred to be taught by one of the sannin, Orochimaru, who isn't as evil in this one, kind of danzo-ish, (He is still malicious and not a very good person but he isn't evil) and see how it progresses from there. This one is attempting to be serious. The last one was too and look how that turned out. I'm putting all of this at the beginning because I just finished the chapter and I'd feel like an asshole putting anything after it.
Once back in the village, Kakashi let all calm pretenses go and sprinted to his apartment, as did Rin, though she hadn't had any such pretense to drop. No thought was spared for Minato, who just flashed to his apartment and collapsed, numb. After all Obito Uchiha, the bright happy idiot that everyone openly or secretly loved, was dead. So fuck protocol. Team seven had been maimed, and all the members felt the effect.
Eventually, Minato after being summoned by an ANBU, had delivered the solemn news to the Third Hokage, Hiruzen Sarutobi. Rin had a breakdown and hadn't left her room or eaten for two days before her sensei had forced her to eat and held her while she sobbed.
But Kakashi had not done any of those things. When the yellow flash came to check on him, he was gone, trashed apartment in his wake. Mirrors were shattered, tables split, kunai sticking out of lamps, scorch marks on a pulverized bed that was found under the rubble of a wall that had collapsed upon being hit by a water jutsu powerful enough to explode the sink it had been blasted out of. Minato did something he was ashamed of. He teleported to a seal that had been placed on his student without his knowledge.
He appeared at training ground 8 and narrowly dodged a lightning covered fist coming towards his head. He caught the boy's wrist on the seconds swing and knocked the kunai out of the other before pulling him close into a tight embrace.
"Why wasn't I good enough. Why couldn't sense it coming?" Kakashi whispered into his shirt.
"It's not your fault. It's not your fault. Never yours. Never."
Kakashi looked at him for the first time in two days. Onyx and spinning red and black staring listlessly at him. Tears only fell from the sharingan, past the first stitches, down over the mask. The other eye just stared.
"Why?" He murmured, voice barely audible, "WHY CAN'T I CRY FOR HIM?" His voice carried out into the silence of the training ground, echoing among the scattered kunai.
"Why can't I cry? Why only his eye? Why can't I feel anything?"
"Shhhh Kakashi, it will be fine. It will be fine. It will be fine. It will be…." Finally, after holding it in for two days for the sake of his students, Minato Namikaze, tool of the village began to cry. Eight nin dogs approached quietly, nuzzling up to their master and master's master. The silence of the training ground was broken only by the sobs of teacher and student, teacher and hound, student and hound, and hound and hound, holding each other, mourning for a friend.