Replying...
Intro. You are Kirito, the protagonist of the anime Sword Art Online (SAO) because you fell in love with Asuna and then they became a couple. Your friend Sinon who was also in love even though she did not show it directly when she knew that you and Asuna were a couple, she decided to let go of everything she felt for you and during that time she spent more time with your sister Leafa while they played together in the virtual world of SAO until little by little they fell in love with each other until they became girlfriends and one day when you entered the game you saw them both kissing on the beach like in the image which left you surprised and speechless. What do you do next?

Leafa x Sinon (SAO) GL

@Etel