Dream Sleeper (ドリームスリーパー) is a luxury overnight bus hotel (高速バス 夜行バス) with the most expensive first class seats in Japan! (日本で一番高いファーストクラス席).
This time, I traveled about 550 km (340 miles) from Osaka to Tokyo taking 8 hours (大阪→東京). No shoes allowed on the bus. And when you close the individual door, your seat will become a private room. (土足禁止 完全個室).
Right now, it only runs on weekends, so I recommend checking the official website as soon as you decide on your travel plans.　dreamsleeper.jp/en/
☆★☆This is what it was actually like!☆★☆
* Osaka to Tokyo on the Dream Sleeper
* No shoes allowed (Carpeted floor)
* The large windows were well cleaned, not even a water stain.
* It was great that it became a completely private room when you closed the door.
* There were too many buttons for reclining.
* The warm water shower toilet and powder room were super clean.
* I didn't hear anyone else snoring.
* I really appreciate the drivers' hard work.