Demonstration

This chapter loving dedicated to Katami_San for her beautiful characterizations of some of my favorite Bleach boys.

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Joining Ichigo in his 'lessons' with Isshin had been an impulse, one Renji found he hadn't regretted. He wondered if he'd have learned more at the academy if the training had included this much pleasure.

They were working on controlling their reaitsu once more, the three of them naked and panting in Isshin's office. Isshin had a look of intense concentration on his face even as he reminded the other men in the room to focus.

"Remember, if you focus, you can do more than one thing with your reaitsu," he said, voice a trifle breathless. His spirit energy was currently curled around and stroking Ichigo's cock while simultaneously sliding into Renji's ass and rolling over his prostate.

Renji groaned around Ichigo's prick; the feel of Isshin's energy sliding over it and brushing against his lips was intense. The energy cock in his ass was large, filling him even more than Ichigo did, making him whine like a wanton slut as he pushed his ass into the fucking.

Ichigo's mouth was currently sucking down Isshin's real cock, tongue working the veins; spit coated his lips and the hard length sliding in and out of his mouth. He'd grown to love the way his father tasted, grown to love the feel of hot, hard flesh stroking over his lips, his tongue.

Ichigo had confessed to Renji after the first time Renji had joined in the 'lessons' that what his father had done to him made him want to try a threesome. Only he didn't really want to share his lover with anyone that way. With his father it was different… he was more a tutor or mentor than anything else, and Ichigo knew he wouldn't have to worry about his father developing feelings for his lover. They'd decided to make it happen the first chance they got, and had yet to find the opportunity to do so in any of their lessons, but both Ichigo and Renji were hopeful today would be the day.

Isshin pulled himself from Ichigo's mouth, ignoring the little whine of complaint that sounded in Ichigo's throat. He tugged at Renji's hair with his hands until he pulled off Ichigo's leaking prick and said, "Time to try something different. I know Ichigo can hold on to his control this way, let's see how he handles it when they both of us are focused on him."

Ichigo darted a glance at Renji and shivered. This was it… this was their chance to give Ichigo what he wanted… a real cock in both ends. Isshin – while definitely focused on teaching the men before him how to have better control of their reaitsu – was in desperate need of an actual fuck. For the last few weeks these lessons had been severing taxing his control. The sight of his son and his lover together was an intensely erotic one, and the feel of their tight, youthful bodies was an amazing turn on.

He hadn't physically had his son's ass since the first lesson and while Isshin wouldn't have minded trying out Renji he knew full well his son was unwilling to share. That was fine with him… Isshin had no problem sliding into the tight heat of his son's ass; it was almost like being home. Isshin positioned Renji over Ichigo's face and watched as Renji pushed his cock into the open mouth before him.

"Ichigo," he instructed, "I want you to use your reaitsu to lightly stroke Renji's body. Tease his nipples, flick at his ear, touch him the way you would with your hands but use only your spirit energy." At Ichigo's mumbled assent he gave Renji his own instructions. "Renji, I want you to use your energy to suck him as he sucks you. Give him back what you're feeling."

While Isshin did plan to monitor their progress, he also planned to thoroughly enjoy himself. He lubed his cock, slid a finger over Ichigo's hole and smirked to find his son already prepared – he and Renji must have had plans for after the lesson – lined his cock up, wrapped Ichigo's legs around his waist and pushed home into the tight clenching heat that was his son's incredible ass.

All three cried out in pleasure then; Ichigo because finally, finally, he knew what it felt like to have two cocks in him at once, Isshin because of the way Ichigo's ass clamped down on him and his son's energy flowed over his body, teasing at his nipples as well as Renji's, and Renji because Isshin had leaned forward a little, parted Renji's cheeks and slid a finger into his ass. The simultaneous sensations were spectacular and Renji's concentration almost broke.

Feeling the fluctuation of their reaitsu, Isshin knew he couldn't draw this out for long, not if he wanted them to keep control and not blow holes in the wall with spirit energy. He worked his finger in Renji's ass for a few seconds, then pulled it out so he could hold on to Ichigo's hips, giving Renji back some of his control. Isshin pulled back and slammed into Ichigo hard, pounding into his son, groaning in pleasure at the feel of velvet flesh caressing his cock, sucking at it as he pulled back and welcoming it with every push forward.

As they moved together – Renji in Ichigo's mouth and Isshin in his son's ass – Isshin allowed his energy to caress them both, teasing their nipples, sliding into their mouths like a hot tongue mapping the interior, pushing into Ichigo alongside his cock and stretching Renji's ass wide and full. It didn't take long for them to come this way and Isshin deemed the lesson a success in that none of them had lost control of their reaitsu, even though for a second there at the end he'd been worried.

Isshin pulled free of Ichigo's body and helped Renji move to a more comfortable position alongside his son on the sofa bed they'd been using leaving his energy buried deep in the asses of both men until he'd gotten his breath back and settled beside them. "We'll have to do that again" he said. "Your control almost slipped at the end there and that would have been a very bad thing. We'll do this exercise until you both can finish without your reaitsu fluctuating," he decided.

Renji and Ichigo – still trying to regain their breath – looked at each other and grinned. Neither one of them had a problem with that.