This DLC adds new team members from Touhou: Wily Beast and Weakest Creature.

NEW PARTNER CHARACTERS
・Eika Ebisu
・Urumi Ushizaki
・Kutaka Niwatari
・Yachie Kiccho
・Mayumi Jotogu
・Keiki Haniyasushin
・Saki Kurokoma
*You must progress to a certain point in the story to obtain these characters.

More details on the official game page of Added Partners "Wily Beast and Weakest Creature Friends" ...