Having read the other works from this group, seeing Luka suddenly act so stoic made me laugh. I couldn't help but imagine her being all desperate yet trying to keep her cool at all times. Pretty much like in the 4koma.
I'm just gonna say that maybe she was a bit too cold in this one. I mean, most of the other comics paint men as horrible unfeeling jerks that only want sex, and here luka is... well, unfeeling and just wants sex.
But even with that, I still can't hate Sekihara because this is the only Vocaloid yuri circle I have found that has no futanari
Extra was amazing. Getting the calm Luka to start moaning is Miku's greatest achievement. The way she tries so hard to hold in the moans is pretty erotic.