Talk:Frisk/@comment-24100805-20151231160405/@comment-3518576-20160119024150

@Kotoni

First of all, Sans only says "Sorry, old lady, this is why I never make promises" before you fight him for the first time. It has nothing to do with killing him and reloading.

Secondly, when he says "Old Lady", he's not talking to you, but instead talking about Toriel. In the Pacifist Route, he explains to Frisk that he made a promise to protect the human that left the Ruins. So, just before he attacks in the Genocide Route, he acknowledges that he's breaking a promise to his dear departed friend and dishonoring her memory.