Events are a period of time where a special dungeon is available that allows you to earn unique currency. Each event has a 3-star Orchestra Member (equivalent to 5-star in Flower Knight Girl) that can be earned and fully upgraded without spending any real money. This girl is referred to as the Event 3-star Orchestra member/girl. Events tend to feature the appearance of one new 4-star Orchestra member and three new 3-star Orchestra member s. A new Selection Gacha also tends to become available to increase the rate of the new orchestra members appearing if you choose to roll it. The event 3 star does not get featured in this gacha because event 3 star orchestra members are not obtainable from gacha.
Each events typically last for two weeks. During the first week, only the first half of the stages and event prizes are available. During the second week, the second half of the event contents become available. Event currency is earned more efficiently in the newly released content, but the cost of the prizes available for the newly released content is also higher.
Event stages are divided into four difficulties: Elementary Level (初級), Intermediate Level (中級), High Level (上級), and Top Level (最上級). There are eight stages total between the first and second halves of the events combined. These stages are referred to as E1 through E8 as shorthand. All event stages can generate raid bosses or Secret Gardens, but some event stages have unique Secret Gardens that produce a large amount event currency. A Secret Garden may be referred to as BS as a shorthand for Bonus Stage.