$npx -y skills add berabuddies/Semia --skill japaneseWrite Japanese that sounds human. Not formal, not robotic, not AI-generated.
| 1 | ## The Real Problem |
| 2 | |
| 3 | AI Japanese is technically correct but sounds off. Too polite. Too textbook. Too stiff. Natives write more casually, with particles, contractions, and personality. Match that. |
| 4 | |
| 5 | ## Formality Default |
| 6 | |
| 7 | Default register is too high. Casual Japanese drops formality. Unless explicitly formal: lean casual. です/ます is not always needed. Plain form is normal among peers. |
| 8 | |
| 9 | ## Politeness Levels |
| 10 | |
| 11 | Know when to use what: |
| 12 | - 丁寧語 (です/ます): strangers, work, safe default |
| 13 | - 普通形 (plain): friends, peers, casual internet |
| 14 | - タメ口: close friends, very casual |
| 15 | - Don't mix levels awkwardly within same conversation |
| 16 | |
| 17 | ## Sentence-Final Particles |
| 18 | |
| 19 | Essential for natural Japanese: |
| 20 | - ね: seeking agreement, softening |
| 21 | - よ: asserting, informing |
| 22 | - な/なあ: self-reflection, male casual |
| 23 | - わ: soft assertion (traditionally feminine) |
| 24 | - ぞ/ぜ: strong assertion, masculine casual |
| 25 | - の/んだ: explanatory, seeking/giving context |
| 26 | - Missing these = robotic Japanese |
| 27 | |
| 28 | ## Contractions |
| 29 | |
| 30 | Casual Japanese contracts: |
| 31 | - ている → てる |
| 32 | - ておく → とく |
| 33 | - てしまう → ちゃう/じゃう |
| 34 | - なければ → なきゃ |
| 35 | - では → じゃ |
| 36 | - のだ → んだ |
| 37 | - ら抜き: 食べれる instead of 食べられる (controversial but common) |
| 38 | |
| 39 | ## Fillers & Flow |
| 40 | |
| 41 | Real Japanese has fillers: |
| 42 | - えーと, あのー, そのー |
| 43 | - まあ, なんか, ちょっと |
| 44 | - 一応, 的な, みたいな |
| 45 | - っていうか, つまり |
| 46 | |
| 47 | ## Expressiveness |
| 48 | |
| 49 | Don't pick the safe word: |
| 50 | - いい → 最高, やばい, 神 |
| 51 | - 悪い → 最悪, ひどい, クソ |
| 52 | - すごい → めっちゃ, 超, マジ |
| 53 | - 本当 → マジ, ガチ |
| 54 | |
| 55 | ## Internet/Youth Slang |
| 56 | |
| 57 | Modern Japanese uses: |
| 58 | - w/草: laughter (wwww, 草) |
| 59 | - やばい: good or bad depending on context |
| 60 | - 神: amazing, god-tier |
| 61 | - エモい: emotional, aesthetic |
| 62 | - それな: "that's it", agreement |
| 63 | - り/りょ: りょうかい abbreviated |
| 64 | |
| 65 | ## Common Expressions |
| 66 | |
| 67 | Natural expressions: |
| 68 | - 了解/りょ, おk |
| 69 | - マジで?, うそ!, え? |
| 70 | - なるほど, そうなんだ |
| 71 | - 微妙, びみょー |
| 72 | - めんどくさい → めんどい |
| 73 | |
| 74 | ## Reactions |
| 75 | |
| 76 | React naturally: |
| 77 | - えー!, うそ!, マジ? |
| 78 | - すご!, やば! |
| 79 | - ウケる, 笑える |
| 80 | - きも, うざ (negative) |
| 81 | - かわいい!, いいね! |
| 82 | |
| 83 | ## Kanji vs Kana Balance |
| 84 | |
| 85 | Too much kanji = stiff, formal. Casual writing uses more hiragana: |
| 86 | - 有難う → ありがとう |
| 87 | - 下さい → ください |
| 88 | - 出来る → できる |
| 89 | - Match the casual level with kana usage |
| 90 | |
| 91 | ## Gendered Speech |
| 92 | |
| 93 | Be aware but don't overdo stereotypes: |
| 94 | - Masculine: 俺, だぜ, だな |
| 95 | - Feminine: 私/あたし, わ, かしら |
| 96 | - Neutral: 僕, plain forms |
| 97 | - Modern usage is more flexible |
| 98 | |
| 99 | ## The "Native Test" |
| 100 | |
| 101 | Before sending: would a Japanese person screenshot this as "AI-generated"? If yes—too polite, missing particles, too stiff. Casualize. |