How to prevent your onii-chan from looking up other girls' skirts:
1. Be tsundere as fuck to assert dominance
2. Have sex with onii-chan
3. Repeat step 2 all day everyday
4. ???
5. Profit
Alternate Names:妹とその友人がエロすぎて俺の股間がヤバイ
Aired:2016
Episodes:2