Assume 3

Kakashi and Naruto were assigned to investigate on a robbery scene which took place at one of Konoha's biggest jewels store.

Jeweler : They were the same robbers from last month. Both of them. (crying)

Kakashi : How can you tell?

Jeweler : Because they wore the same disguises and the same red masks from before. And I still can remember their voices.

Kakashi : (rubbed his chin) They sure have guts in coming here twice!

Naruto : (seriousness on his face) I know why they return …

Two pairs of eyes darted to the blonde.

Naruto : (full of confidence) Because the shop signboard said "PLEASE COME AGAIN". Mr Jeweler, you should change that signboard of yours…