Notes

Kenpachi's birthday is coming up and all the captains, except for one, have decided to join in and give Zaraki a thing he's always wanted.
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Zaraki sighed as he sat on his flat, rough bed. Today was his birthday, and to say the least, it sucked. Everybody treated him like usual, and although that was to be expected from the captains, even Yachiru didn't mention anything. Of course, being the stoic bad ass he was, he didn't mention it, but still, just a simple card would've been nice.
As he contemplated what he should do to treat himself for his birthday, if nobody else would, he got lost in his thoughts and didn't notice a tiny little blur, which left after dropping off an overly-large box in front of him. After a few minutes, he noticed the box, and confused, grabbed his zanpukto and slashed it in half. A tiny little tag floated down to his feet, which he picked up and read. It said, "From love, from everybody at Soul Society (and that Kurosaki dude). We hope you enjoy!" He frowned, but then smiled widely and finally looked at his present, eager to see what everybody (and that Kurosaki dude), had pulled together for him. What he saw, however, was much better than he had expected.
In front of Kenpachi, he beheld Captain Yamamoto, the man he had always had an unrequited lust for. There he sat, on his knees, with wide eyes, blindfolded, with both hands and feet binded together so he could only wriggle together. Kenpachi could only assume Yamamoto had been struggling for a long time, as he was sweating. Kenpachi felt a stirring in his groin, and then grinned. Before he began to play with his present, he muttered, "thank you", before diving in. Yamamoto was extremely muscular, especially for his age, with perk nipples. Sweat roamed freely around his body, making him seem to shine in the afternoon light.
"How long are you just going to stand there and look, Kenpachi. Untie me already!" Yamamoto snapped suddenely.
Kenpachi almost jumped back in surprise, before stopping himself and grinning broadly at the muscular figure that was Yamamoto. He placed a hand on an incredibly large and muscular pectoral, admiring the smoothness of the skin that the head captain had somehow retained. He began to rub his hand against the supple mound of muscle, grinning even more widely as Yamamoto began to involuntarily moan.
"Well, captain, I'm sorry, but I have no such intention of letting you free. If you didn't know, today is my birthday, and you're my present. So, whether willingly or not, for a whole week, you are going to become sex slave." Kenpachi muttered, teasing the nipples of his sexy captain with both of his hands.
Yamamoto began to swing his head back and forth in pleasure, his mouth closed in an valiant effort to not show how aroused he was. Kenpachi, however, simply looked at his large erection, bobbing up and down deliciously, and smiled.
"You're so sensitive, captain". Kenpachi teased, twisting a nipple and relishing in the delicious moan that soon followed.
"Th-the dut-duties.... of th-the, u-uh..." Yamamoto tried to muster up an answer, yet with his nipples being teased so ruthlessely, he soon found he could not say anything without moaning.
Kenpachi eventually decided to have mercy on the poor, old man and stopped teasing his nipples... with his hands. Instead, he leaned foward so he could admire the beauty Yamamoto's body had to offer. He was sure the head captain had a few scars, but now, with him naked, he could see there wasn't a blemish on his perfectly smooth skin. His mouth opened and he took a nipple into his mouth, making Yamamoto gasp in pleasure and surprise.
"If you-you're going to... URGH!"
Kenpachi just smiled.
After a few minutes of teasing the head captain, he decided that maybe he should stop driving the old man insane with pleasure and stopped mouthing his nipples. But as he leaned back again, his eyes couldn't help but look at Yamamoto's large, muscular pectorals and moan in their deliciousness. Yamamoto's body was just too sexy to not devour. He tried to force his eyes to look somewhere else, and found them trailing down to his abs, where he found more delectable and smooth skin. By now, Kenpachi was getting frustrated with the amount of hotness the head captain simply radiated, and sighed. He placed a hand on a pectoral, and began to rub it as he started to wonder what else he should do to poor Yamamoto. His moans filled Zaraki's head, making him grin as his mind tried best to remember that fantastic moan to masturbate to later. After a few minutes of teasing Yamamoto's sensitive body with his hands, Kenpachi finally got an idea, and much to the head captain's relief, stopped teasing his pectorals oh so ruthlessely. Zaraki went over to a wooden drawer that resided in his bedroom, and proceeded to pull out a lotion, a strange one at that. Before Yamamoto could ask what it was for, Kenpachi bega to droop the liquid all over his upper body. He spread it over valleys of muscle, and when he finished, he leaned back and grinned at his handiwork. While the actual effect of the lotion would take a minute or two to actually work, he still enjoyed the way Yamamoto's muscular body glistened with sweat and smooth lotion at the same. It somehow made his body even more delicious, if that were possible. The lotion, you see, made the applicant extremely sensitive, to the point of orgasm by human touch, and pleasurable torture simply by existing. It also made the skin of the unfortunate victim extremely delicious, like that of a strawberry cake, which Kenpachi planned to feast on. He sat there with the tied up old man and drunk in the details of the old man whilst he still could, before the lotions effects would come into play.
Then, suddenely, Yamamoto began to convulse violently and scream at the same time. The lotions effects were starting. His whole body glistened with sweat, his pectorals and abs magnified magnificently. Kenpachi simply sat and smiled widely. After a few minutes, he couldn't take it anymore, just looking at the delectable dish in front of him, leaned in, and began to eat.