As of 0.095g, beignigns have been implemented into Yume 2kki. All the game's endings are listed below.
Note that nearly all of the endings require you to drop your effects in the Trophy Room at Urotsuki's Dream Apartments. To do this, equip an effect and then interact with the corresponding pillar to 'drop' it.
\ \ \ \ \ WARNING: GAME SPOILER DETAILS FOLLOW / / / / /
ENDING SPOILERS AHEAD. DO NOT READ UNTIL YOU HAVE COLLECTED ALL THE EFFECTS. THE VIDEOS SHOW THE ENDINGS.
Spoiler below: Press to go fuck yourself
After viewing all 4 main endings, a purple present will drop from the ceiling of Urotsuki's room.
If you interact with it you will get a "key" effect that will let you open Urotsuki's front door.
Outside, if you go through the utility room and press Z in front of the big keyhole door, you will be transported to the Developer Room.
Ending #1
lol