The specific inclusion of "-Oyasumi-" in the search consciousness of fans is significant. While the opening theme, "Puzzle" by Round Table featuring Nino, is upbeat and catchy, mirroring the manic energy and chaotic comedy of Satou’s delusions, the ending theme, "-Oyasumi-", serves a different purpose.
You close your eyes. The dark behind your lids is not empty. It's filled with a thousand tiny screens, each one playing a different ending. -Oyasumi- NHK ni Youkoso - Welcome to the NHK -
There is a specific scene in the anime where Satou and Misaki drift out to sea on a boat, having agreed to a double suicide. As the shore fades and the night deepens, Satou looks at the sky and whispers something akin to "Oyasumi" to the world. The specific inclusion of "-Oyasumi-" in the search
"No."