Here is an overview of the game, via its Steam page:
The first new game in 12 years from Alfa System, the team that brought you the shoot ’em up Castle of Shikigami III in the Castle of Shikigami series.
Five uniquely talented sisters are squabbling over which of them will marry the angel Yashin. Enjoy the heroic (?) strategies of all five!
The Tension Bonus System (TBS) means your score and number of coins multiplies based on your distance from enemies and their attacks, and the Powershot System changes normal attacks into strong attacks, further ramping up the tension!
Plus, once the TBS has multiplied by two within a certain time, Secret Fairies will be hidden somewhere in stages for you to find.
Master these systems and set new high scores!