"Looks like my brother — is a big pervert." When my own sister sees me masturbating to a pornographic incest game, she decides help me out. For some reason, she uses her mouth. My own sister! Our play becomes more and more intense, even though my sister is always scolding my lustful desires, From teasing to loli-cosplay to blowjobs to unprotected ejaculation! Is my sister really going to cure me of my sexual perversions? (Source: France Shoin, translated)
Japanese study overview
Ore no Imouto ga Saikou no Okazu Datta: Cool na Kanojo ga H no Toki Dake Dereru Riyuu is a Japanese novel of 471,616 characters, with 13,140 unique words and 1,997 different kanji. Its difficulty rating on Jiten is average, 2.0 out of 5. The full vocabulary list ranks all 13,140 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Subdecks
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Vocabulary highlights
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.
- 俺I×4,282
- 美優Sakura×3,978
- 山本foot of a mountain×1,740
- 射精ejaculation×648
- 妹younger sister×551
- 言うto say×541
- 精液semen×498
- 由佳Naoka×484
- 思うto think×478
- 佐知子Sachiko×425
- お兄ちゃん(one's) older brother×412
- 私I×400
- 鈴原Suzuhara×182
- 遥Urara×177
- 手コキhand job×65
- 優花里Yukari×53
- 高波high waves×44
- 啓太郎Keitarō×37
- オフ会(in-person) meetup (of members of an online community)×26
- 性感sexual feelings×22