Basically, its a flashback chapter, when Nodoka and Yuki are still in middle school. I believe they are graduating once spring is over. Nodoka has a future aspiration form in her hands, and she has no idea what to write. Yuki mentions that if Nodoka wins the championship in an online mahjong tournament, a lot of high schools might take her in. Yuki then quips, saying that if she is still pondering over her future aspiration, Yuki will take her as her bride
. She'll put Nodoka in the kitchen and taco making is a must
Nodoaka then says that might not be a bad idea...to which Yuki says she feels embarassed and to forget about it. To which Nodoka mentions about iPS (some law perhaps?) where same sex couples can have children. I'll leave that to sink in for a while...but anyhow Yuki goes all taco-minded and wants to have taco.
After Yuki has her fill of taco, she declares that she is going to Kiyosumi High school. Just because their cafeteria serves taco
. Yuki then mentions that in high school you will meet new friends. As it is a new environment, something wonderful might happen!
Saki in the foreground is probably holding the application form to apply to Kiyosumi as well.