Here is a game I played a few days ago.

great game.

thanks for posting, as you say, interesting game

yes. very interesting!!!

and i want to ask, how about line 6.Bxf7? it's any advantage for black?

Bxf7 is good for white.  It wins a pawn, and black had to play Ke7 and then castle by hand.  The only downside is that white has already moved the knight and bishop twice, and will probably have to move both again, thereby leaving white behind in development.