As everyone else has already mentioned how great the title story is, I feel that I should stress how much I love one of the other oneshots in this (as it doesn't have it's own page here on MU), Kanjou Spectrum.
Of course the art is totally delicious, the characters are all good looking, manly men that have impeccable fashion sense in my opinion. (I just love men with pierced ears, and all 3 of the main characters do!)
Plus the plot is nice and cute. It is very predictable right from the start, (honestly if you don't automatically know what the supposed "twist" is going to be, then I seriously wonder about you), but I like that. I knew right from the first page that there was going to be a happy and satisfying ending, and of course I wasn't disappointed in the least.
To be honest I think what I liked the most about this, is that despite only having 40-something pages, the romance was perfectly paced. Instead of any of the characters randomly falling in love after being confessed to or even raped (we all know how often that trope is used in the BL realm!),
Kugou's feelings gradually developed due to actually spending time with Usui, so he got to see how cute Usui is (and my goodness, he is really cute ^^). And I really enjoyed seeing how Nakaya's presence started to irk Kugou as his jealousy and possessiveness over Usui started to develop too! XD (I'm not sure if I needed to put this as a spoiler, but I thought perhaps some people may be shocked to find out who the main pairing will be. Though like I said earlier I think it's obvious right from the very start...)
I often find oneshots to be very hit-or-miss as there are so few pages to flesh out characters and create enough of an impression on the reader that they'd feel satisfied after reading. Yet I have to say that I think Yoneda-sensei did a remarkable job with this particular oneshot. There were no bitter feelings in this at all, no silly misunderstandings (admittedly Kugou did misunderstand one pretty big thing the whole way through, but that was mostly because Usui had "confirmed" his suspicions), and no love-triangles (hurray!). Though after seeing the very short, but very funny, extra from Nakaya's POV, I feel kinda sorry for the lonely boy XD I'd love to see a continuation based on him finding his own seme! (No matter how I look at him, he just screams "uke" in my opinion ^^)
So while both NightS and Reply are brilliant, I personally prefer Kanjou Spectrum, and I just thought it deserved it's own mention ^__^