Yeah, it's probably just a play on "Yamada Taro" with Jonin Shimada's name instead. The kanji used on the card is the same as his name, "嶋田" (Shimada).Guessing the name on the credit card ("Shimada Taro") is a spoof of 山田太郎 ("Yamada Taro", Japanese equivalent name of "John Doe")?
I wonder -- do the ninjas inside know about the ninja on the balcony..?Well even if the benefits are all fake bullshit, and they probably are, if he says no he will have to 1v3 himself a way out if that appartment, and he doesn't even knows about the ninja on the balcony
So is not like he can really refuse