聡
#tattoo #kanji #language #japan #asia #oriental #design #ninja
聡 means:
1.	(ad) having sharp or quick intelligence  
2.	(ad) having a keen ear
(音) ソウ
(訓) さとい
As an aside, my name is 聡, Satoshi. Despite this, I never knew that 聡 also means ‘having a keen ear’.