If you cant`t reach your dreams, use more lube

You know the Rules and so do I

How to prevent your onii-chan from looking up other girls' skirts:
1. Be tsundere as ♥♥♥♥ to assert dominance
2. Have sex with onii-chan
3. Repeat step 2 all day everyday
4. ???
5. Profit

https://mangadex.org/title/7200/kimi-wa-midara-na-boku-no-joou