The blue Daisy represents Idea, the female protagonist of Soma Bringer who wears a blue flowing dress.
The stage represents the forest in Soma Bringer where an unconscious Idea is first encountered.
The Timer item, and the Move Speed ↓ and Health Recovery rules reference Idea's Soma class, a mage class which specializes in magical abilities.
The stamina battle condition references the battle system in Soma Bringer where each character will feature an HP meter that gauges their health during battle.
Other trivia:
This spirit's Support type references Idea's role in Soma Bringer as a member of Welt's division.
This spirit's PSI Resist ↑ references Idea's usage of, and resistance to, Soma-related abilities.
