So I came across this Japanese book by Yu Nakayama on the conformal bootstrap, called "高次元共形場理論への招待―3次元臨界Ising模型を解く" (Invitation to High Dimensional Conformal Field Theory - Solving 3D Critical Ising Model)
Do you know if there is an English edition? It is the only book that I know on the conformal bootstrap so it's really interesting.