To get Observation Haki in Blox Fruits, you must meet certain requirements and complete specific tasks. According to, you must be at least level 300, have solved the Saber Expert riddle, and slain Saber Expert at least once. Additionally, you need around 750,000 Beli in the game. Once you have satisfied these initial requirements, you can acquire Observation Haki by speaking to the Instinct Teacher and purchasing it for the 750,000 Beli you have saved up.

After obtaining Observation Haki, you can level it up by dodging opponents attacks and gaining experience points (XP), which will expand your range of abilities. The amount of XP and dodges required to level up Observation Haki is shown in a table in.