Hello, World is the fourth Korean-language extended play and fifth overall by South Korean singer Baekhyun.

It was released on September 6, 2024, by INB100 through Dreamus and contains six tracks, including the lead single "Pineapple Slice".

[2][3] On August 12, 2024, INB100 announced that Baekhyun would make a comeback by releasing his fourth EP titled Hello, World on September 6, 2024, about 3 years and 5 months since the released of Bambi and his first work after establishing his own company.

[5] INB100 released the scheduler of Baekhyun's fourth EP and revealed various teasing contents on August 14.

[6] The music video teasers of the lead single "Pineapple Slice" were released on September 2 and 5, 2024, respectively.