Morning Musume '20 Haga Akane Birthday Event (モーニング娘。'20 羽賀朱音バースデーイベント) is Haga Akane's 18th birthday event. Two shows were originally set to take place on March 18, 2020 at LANDMARK HALL. The event was later rescheduled.
On March 11, 2020, it was announced that the event was cancelled in consideration of a new policy established by the government to prevent the spread of the coronavirus.
On July 3, 2020, it was announced that the event was rescheduled for July 31, 2020 at LANDMARK HALL. In compliance with government policy, cheering, crowding, standing, and closeness in the venue are prohibited, and wearing masks will be required to enter.