There are tentacles in this, Mimiru.
Who: tastysidedish & memory_fugue
Setting: Their shared apartment at Christmas and Yuzuru decides to show Hideki how to iTouch -- I mean, work his iPod
Warnings: THERE BE SEX IN HERE NO I'M SERIOUS
Notes: AU where Hideki and Yuzuru are, and always have been, gay
[For Hideki, Christmas was about three things: the free Christmas cake his boss Ueda would give him, the jealous sickening feeling in his stomach at seeing all the romantic couples flock about, and fantasizing a huge man sticking his Christmas yuletide wood inside of him. Hideki heard, "you're such a nice boy...why don't you have a girlfriend?" all too often but it was not such an easy thing to admit his sexuality to complete strangers. He had found one such person to confide in, his roommate, Yuzuru Otonashi. He alone knew the secret Hideki kept (which basically meant the entire world knew). Hideki knew Yuzuru wasn't the same, no, Otonashi. He wasn't close enough to call him by first name.
In any case, he'd been kindly given an iPod for Christmas from his boss (unknowingly with preinstalled porn, no less!) and fiddled around with it in an attempt to figure it out.]
I'm really lucky to have met him. Otonashi is a good guy! Hey, he'd know about how to work this kind of thing, right? Yo! Otonashi! C'mere for a sec!