Bionis' Interior - the following locations have the highest spawn rate (8%) for Black Liver Bean:
Second Lung (3 spawn points scattered in the area)
west of Vein Crossroad; look for the dead-end
Terminal Vein; look for the dead-end
the lone elevated platform south of Spinal Nerve Tower in the vicinity of the fire elemental ether deposit; the area is only accessible by jumping off from high ground
northwest of the Heart Entrance; look for the lone spawn point
south of Terminal Vein; look for the large circular platform with a puddle of water
Venous Plexus; look for the puddle of water
west of Terminal Nerve Tower; the passage is guarded by the UM Ghostly Mahatos
northeast of Terminal Nerve Tower; look for the circular platform with a puddle of water
east of Third Lung; enter the geyser that leads to a higher platform, the spawn point is ahead
west of Upper Trachea, near the ledge
https://xenoblade.fandom.com/wiki/Black_Liver_Bean_(XC1)
Sinon vous pouvez en troquer chez l'archisage nopon