Splash Party is a concert series that was announced at the start of Hololive Summer 2023. The Concert series runs for 2 days, on August 26 & 27, 2023. The concert is the first summer concert for Hololive, featuring 53 talents in total.  The first day of the concert, Sunshine, was originally delayed due to server issues with the Z-an platform. The Sunshine event would later go on to be postponed entirely due to the persisting technical difficulties. After an apology and confirmation of refunds for day 1 ticket holders from Z-an , Hololive announced that Sunshine would be streamed for free on August 27th at 1 PM JST on the Hololive Youtube Channel. 
Due to the postponement of the Sunshine portion of the event, day 1 was aired concurrently with Vshojo's first concert: Candy Pop Explosion. Additionally, both groups used YouTube as the streaming platform.