Low-surface-brightness (LSB) structures play a crucial role in understanding galaxy evolution by providing significant insights into galaxy interactions, the histories of mass assembly, and the distribution of dark matter. Nevertheless, their inherently faint nature, coupled with observational difficulties such as stray light interference and variations in the sky background, has significantly impeded comprehensive studies of LSB features. The KASI Deep Rolling Imaging Fast Telescope (K-DRIFT) project aims to address these observational challenges by developing off-axis freeform three-mirror telescopes and observational strategies specifically designed for LSB imaging surveys. The first generation of K-DRIFT (G1) has been successfully completed, and the forthcoming survey, scheduled to commence shortly, is expected to yield novel insights into the LSB universe. This paper outlines the scientific motivations of the project, discusses the technical challenges encountered, highlights the innovative solutions devised, and describes the future trajectory of the K-DRIFT.

Introduction
    Motivation: The Importance of Investigating the Low-Surface-Brightness Universe
    Challenges: The Difficulties of LSB Imaging 
    Strategies: Various Efforts for LSB Imaging
K-DRIFT Framework: Advancing Optimal LSB Observations
    Instrument Outline
        Optical Design
        Camera
        Filter Sets
        Focuser
        Mount
    Survey Strategy
        Site
        Observation Method: Rolling Dithering
        Operation Plan
K-DRIFT Science Themes
    Galaxy Formation and Evolution
    Advancement of the Lambda CDM Model
    Transients, Variable Sources, and Stellar Substructures in the Milky Way
    Circumgalactic Medium and Environmental Effects
K-DRIFT Prospects
    Legacy Imaging
        The Role of Legacy Imaging in LSB Research
        Complementary Multi-Wavelength Legacy Datasets
    Beyond Ground-Based Observations: Space-Based K-DRIFT
Summary
Acknowledgments
References
Calculation of Surface Brightness Limit

• Jongwan Ko(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea) Corresponding author
• Kwang-Il Seon(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Jihun Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Yunjong Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Kyohoon Ahn(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Gayoung Lee(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Jihye Shin(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Hong Soo Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Seonwoo Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• GyeongGon Bahk(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Seri Yeon(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Space Science, University of Science and Technology, Daejeon 34113, Republic of Korea)
• Woowon Byun(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea) Corresponding author
• Yongseok Lee(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Sangmin Lee(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Sang-Hyun Chun(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Kyusu Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Jaewon Yoo(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Jae-Woo Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Sang-Mok Cha(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Dong-Jin Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Jaehyun Lee(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Kyungwon Chun(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Sungryong Hong(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Jongyeob Park(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Young-Beom Jeon(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Eon-Chang Sung(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Yeonsik Kim(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Atmospheric Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea)
• Yongmin Yoon(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea, Department of Astronomy and Atmospheric Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea)
• Jinsu Rhee(Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea)
• Daewook Kim(Wyant College of Optical Sciences, University of Arizona, Tucson, AZ 85721, USA, Department of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721, USA, Large Binocular Telescope Observatory, Tucson, AZ 85721, USA)
• Seunghyuk Chang(Center for Integrated Smart Sensors, Daejeon 34141, Republic of Korea)
• Dohoon Kim(Green Optics Co., Ltd., Cheongju-si 28126, Republic of Korea)
• Il Kweon Moon(Center for Space Optics, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea)
• Hyuksun Kwon(ADSOLUTION Co., Ltd., Daejeon 34168, Republic of Korea)