Imouto Manual

1. Secret? Morning (しーくれっと？もーにんぐ); kakioroshi
   A brother and sister gets interrupted in their lovemaking when their mother comes back to pick up something.

2-4) Zettai Ousei (ぜったい王性); Plum DX 12, 13, 14
An older brother decides to take things even further with his three younger sisters.

5. Ramune (ラムネ); Plum DX 15
   A NEET older brother plays a prank on his sharp-tongued little sister by replacing her ramune candy with an aphrodisiac.

6. Pool ni Ikenai Jan (プールにイケナイじゃん); kakioroshi
   A girl gets a new swimsuit from her brother and his friend in exchange for sexual favors.

7. Otsukai de Yorimichi (おつかいで寄り道); kakioroshi
   A brother and a sister have sex in a public restroom when all of a sudden the sister's classmates show up...