It may look simple, but it's not that easy.

Summer! Hot! Need to cool off!!
Dive into the sea to chill!!

* Fully playable with no in-app purchases.


About the developer
I make games to give you a refreshing break.
Simple, quick to play, and easy to stop.

No grind. No pressure.
Just something you can enjoy — and move on.


Have questions or suggestions? Check out the FAQ first.
You can also learn more about the design philosophy behind my games.
https://sorakomi.com/soft/game/faq_app.html

If the app doesn’t run smoothly on your device, try the web version at the URL below. You’ll also find a list of all materials used there.
https://sorakomi.com/soft/game/penpen_slider/main.html

Compatible devices:
Xperia (SO-04F)
Galaxy S6 edge (SCV31)
Moto G5 (XT1676)
Oppo (CPH2099)