This entry includes the following chapters:
 
1. Oiwai Sex: Onii-chan no Tanjoubi (おいわいせっくす ～お兄ちゃんの誕生日～) released at Comiket 94, later one included in Otomari Sex Omnibus from Comiket 97. 
2. Oiwai Sex 2: Imouto no Tanjoubi (おいわいせっくす２〜妹の誕生日〜) first released online in FANZA and bundled with Oazuke Sex in Comiket 95, later one included in Oyasumi Sex Omnibus from Comiket 97. The setting happens after Oazuke Sex. 
3. Oiwai Sex 3: Onii-chan 20-sai no Hi (おいわいせっくす 3 ~お兄ちゃん20歳の日~) first released online in FANZA, later one included in AQUADROP omnibus from Air Comiket 2. The setting happens after Oyasumi Sex AfterGrowth.

1. Kako Kaisou: Hajimete no Fella (過去回想〜初めてのフェラ〜) 
2. Oyasumi Deepthroat (おやすみディープスロート); Comiket 91 
3. Ohayou Sex (おはようせっくす); Comiket 89 
4. Ohayou Sex Bangai-hen (おはようせっくす番外編); Comiket 91 
5. Odekake Sex (おでかけせっくす); Comiket 90 
6. Odekake Sex Bangai-hen (おでかけせっくす番外編); Comiket 90 
7. our way home 
 
Note: Chapter 8 exclusive to the Special Edition; Odekake Sex Soushuuhen Tokusouban (おでかけせっくす総集編特装版)

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