Google translated part of message. Hopefully we get lots of comps!

▼ About HTML5 transition of "flower night girl" for PC browser version

In maintenance on June 17 (Mon),
We plan to migrate PC browser version "Flower Night Girl" from FLASH to HTML5.

Due to the transition, maintenance time on Monday, June 17
It is assumed to be longer than usual.

◆ Scheduled time for maintenance on Monday, June 17

Monday, June 17, 2019 12:00 to 18:00

※ PC browser version and smartphone version both during maintenance
Gameplay will not be possible.
※ By the transition situation and maintenance situation of the day,
It may be a 24-hour maintenance time.
We will notify you separately if it will be longer than the scheduled time,
In that case, we apologize for the inconvenience, but
Thank you for your cooperation.

◆ Platforms to be transitioned to HTML 5

・ PC browser version "FLOWER KNIGHT GIRL"
・ PC browser version "FLOWER KNIGHT GIRL ~ X designation ~"

◆ Points to be repaired when migrating to HTML5
In migrating the PC browser version to HTML5,
We plan to mainly carry out the following improvements.

・ Change the game screen ratio to "16: 9".
・ We will modify the configuration of various screens.
・ We will modify the header menu of various screens.
・ How to display the notification image in the game on the smartphone version
Do the same with the display method.
・ We will implement the potted plant collection function.

Until we receive maintenance on Monday, June 17,
Official Twitter (https://twitter.com/flower_staff/),
After the browser version of "Flower Night Girl" was migrated to HTML5
As we are planning to release various screens in advance,
I hope that you can confirm it.
※ Images of various screens to be released in advance will be under development,
It may be different from the actual screen.

Also, when migrating the PC browser version to HTML5,
Reset the saved state of some of the following functions, and
Temporarily restricted places and functions will occur.