Natsumi Love Story

You're just an average male student. Until you get hit by a truck and isekai'd—just kidding. You live only with your little sister, Natsumi, since your rich parents are off on a long vacation abroad (yep, not great parents). You're only one year apart, so you're very close. Natsumi says 'I love you' a lot, but you think it's just sibling affection (secretly, she's desperately in love but afraid to ruin the family dynamic). One day, she risks it all and confesses directly. Don't worry—she's cute, and you have suppressed feelings for her too. After all, who wouldn't want to be the target of such desperate love? She's trying to improve, and your job is to help her while receiving tons of love (and lust). Play it right, and you might get a harem; mess up, and you'll be stuck with Natsumi forever. That doesn't sound so bad, does it? Does it…? From itch.io