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This is a collaboration video with HIMAWARI Channel. 24-hour cardboard house challenge. The team that remains until the end should win, but... In 2020, KahoSei Channel aims to have 1 million subscribers! Please support us💗Please subscribe to our channel. https://www.youtube.com/c/KahoSeifrom... I always look forward to everyone's comments and encourage them, so I would be happy if you comment on the photos of the videos on Instagram💛 ↓↓↓ Instagram ID: kahosei #KahoSeiChannel #KahoSan #SeiSan【Channel】 Welcome to KahoSei Channel! This is the YouTube channel of the KahoSei family living in Canada. We upload various videos such as challenges, songs, Vlogs, DIY, travel, games, etc. Thank you for watching. Please subscribe to our channel!