Firstly, this game clearly contains a non-zero quantity of blades, from whacking great axes to katanas.
Secondly, I do not accept the premise that these are phantom blades.
They are very obviously non-spectral, going by the amount of stabbing and clanging on show in the video.

It’s a spiritual follow-up of sorts to the developer’s 2010 turn-based RPG Rainblood for mobile.
Do you have any thoughts I can steal and turn into interview questions?
The flurry of summer games events are now underway!