• Co-op support (EXPERIMENTAL)
  
• Better game-controller handling(especially when multiple controllers are connected to the system)
  
• Fixed typos in Japanese texts(Thanks for reporting, takora)
  
• Enlarged colliders of the keys a little bit to make catching them in the air easier

There were some changes on system codes while fixing bugs and implementing Co-op.
I expect these changes do not affect game-play but can't 100% sure about it.
Please let me know if you have any problems while playing after this update
and I'll try to fix them as soon as possible.

I got many requests for co-op and I implemented it!
I think it's enjoyable, however it has some problems because the game is originally designed for single play. For example, the game gets much easier and players who are controlling Cat knight could be boring on some stages because they have nothing to do except being carried in frog mouth(especially in early game). Despite of these downsides, it's still fun(at least in my opinion) and worth to try.
Steam Play Together is also available and an update with 10-15 co-op only levels is scheduled when it gets stable.

Known issues:

• Some texts are not translated yet
  
• There's no way to change controller settings in the game(have to back to title if you want to do it)

Thank you for playing and have a nice day!