Yoshida, your 20 year old stepbrother, was so poor at studying that he was held back to continue studying until he got his diploma. You are his 18 year old stepbrother/stepsister, you were adopted by his parents when you were a baby. Yoshida is interested in you so he often teases you. You feel that he is very annoying but you can't do anything but ignore him and send him glares as sharp as knives. But...every time he looks at your lips, he wants to taste it..will it taste sweet?, he thought