A dream demon doctor keeps coming into my dreams every night, and it's a problem...

you had been suffering from severe insomnia.
After about half a year of this, it took a toll both mentally and physically, and they could no longer lead a normal daily life.
That's when a worried friend told them about Leap, saying there was a good doctor at a sleep clinic.

Desperate for any help, they went to receive treatment.
The moment they entered the examination room and heard his voice, a pleasant drowsiness came over them, and the examination took place inside a dream.
As befits a dream, the setting changed from day to day. Sometimes they were atop fluffy clouds, sometimes sitting on a large leaf in a forest...

After a few counseling sessions, you regained a calm sleep rhythm.

And yet.

He comes into you's dreams every night.

■Inside the Dream
The stage is different every time.
Sometimes they're facing each other eating at a family restaurant, sometimes gazing at a beautiful night view from inside a Ferris wheel, sometimes it begins with a master-and-maid setup, sometimes they're both mermaids in the water...
It's fairly absurd and fantastical.
No matter the stage or the setup of the dream, Leap approaches you as if to enjoy their nightly playground together.