The Japanese Ninja was a fearsome silent killer, below is a list of weapons he might carry and use on assassinations, can you spot the odd one out?

Ashigaru is the correct answer because it refers to Japanese foot soldiers, not a weapon. The other options are all weapons or tools: Poison darts for silent assassination, Sai (a pronged weapon), Egg shells with pepper powder (for blinding enemies), and Chu-Ko-Nu (a repeating crossbow). Ashigaru were the infantry class, not equipment they carried.