This is one of my favorites. I like the artwork and the sweet plot, but also the slight humor in the way they get it on so quickly.
Also, did anyone besides me notice that Sayori seems to have slept in her clothes? She definitely gets up in what she wore the evening before, and it doesn't look like a nightgown. It also appears they literally boinked the entire day away because I doubt Kimika visited in the evening and the next thing we see is Sayori being late for work... That#s what I call a happy reunion indeed!