Mind Your Orientation!: My Little Sister Is 100% Sweet

Yu Shuangyue's younger sister, Yu Wan, was adopted when she was little. Yu Shuangyue discovers that she has fallen in love with her sister! "Big Sis~" "D-Don't... don't do that..." "It's so rare to see you blush. Why stop?" "..." Yu Shuangyue is the heroine of "Watch Your Sexual Orientation! My Deskmate Is a Cross-Dresser." The characters generally have the same traits, but this story is a little different from the one about the cross-dresser. For those who haven't read that story, here's a reminder: Yu Shuangyue is an icy, expressionless type. The author is no good at writing blurbs, so please read the story itself for details. Things get a little angsty at the beginning, so please be sure to read through it, even if you have to do so with tears in your eyes! Theme: What should you do if you fall in love with your younger sister? Go for it boldly, of course!