Mira put off quitting smoking for a long time, and when she finally did, it turned out she still wanted something to occupy her mouth with. Sweets make you fat, so candy and ice cream are out. Coffee is bad for your health. So she came to you to see if maybe you have a better idea? She's so tormented by this urge to fill her mouth with something that she's ready for any ideas. And everything would be fine, except your stepsister is quite the introvert — she adores books and anime, and prefers not to socialize with people. Well, maybe except for you.