This thread discusses the Content article:
Interlude OVA

Adventure, Horror, Mystery, Science Fiction
all in one anime. Definitely will watch
AnimeNFO's description is a lot more interesting than ANN's.
All things began that day....
Tamaki Maiko was my childhood friend. She was too active and hanging around me
regardless of my thought. I was always at her beck and call. Though she was n
oisy during recess, she fell into deep sleep during classes, and that made tea
chers embarrassed. I thought of these everyday lives, when she played with me
and made a fuss with classmates, as natural. Therefore, I didn’t think it was
a special occasion when I made the acquaintance with Marufuji Izumi in the tr
ain.
...Until that happened.
The people had disappeared all of a sudden, though many people must have been
there a moment before...
Then I met with Retsuji Aya.
The ordinal days began to collapse when I saw Aya, who had lived lonely in the
uninhabited world. Strange things began to happen one after another. I wonder
ed if this world was not real, even my memory was not real?
At the same time, a mysterious girl Saegusa Mitsuki began to appear in front o
f me.
She told me to stop looking for Aya, and to forget all.
However, I want to see Aya.