what chapter does jujutsu kaisen season 2 start

According to multiple sources, the first episode of Jujutsu Kaisen season 2 begins with chapter 65, although technically, you should start reading from chapter 64 if you are catching up with the manga starting from season 2. The Gojo’s Past/Hidden Inventory/Premature Death arc covers chapters 65 to 79, which is episodes 1 to 5 of season 2 in the anime. The rest of Jujutsu Kaisen season 2 should be able to cover the whole of the Shibuya arc, which covers chapters 79 to 136 of the manga.