At worst, a collectathon platformer.
At best, a turn-based RPG with dating elements where you can choose to be Oscar or Hedgehog as the protagonist (you can still recruit the other in your party) in a mission to stop... something.
Generic Fighter / Wizard / Rogue set up for the characters. Oscar is an all-around character, Hedgehog is a fighter/wizard hybrid. Max is a fighter, Pepper the rogue, Alexa a fighter/rogue hybrid, Lucy is the wizard/rogue, and Susie is the secret party member who fills the pure-wizard slot.
Oscar gets a special Summon if you choose him as the protagonist that gets Moon into combat, while Hedgehog can use her special ability to shapeshift into a werewolf. Susie, as the secret party member, has her own ability to spam alien units that are glass cannons.