A discreet investigation with 極秘
Kanji Explanation: Secrecy and hiddenness with 秘 (Future entry)

Detective Mouri’s favorite idol, Yoko, comes to his agency after receiving threatening calls and candid photos. Her manager hopes to keep the matter quiet to protect her image.
- 毛利:
- 「承知
( しました!極秘( に調査( するとしましょう!!」- “Got it! Let's investigate this discreetly!!”
- Literal: “Understood! Let us investigate in strict secrecy!!”
- “Got it! Let's investigate this discreetly!!”
- ヨーコ:
- 「あ、ありがとうございます!!」
- “Thank you very much!!”
Key Points
1極秘( = “strictly confidential”
- In this scene, 極秘
( に means Mouri will handle the investigation very discreetly and keep it out of public view. - The 極- part adds intensity, so this is stronger than just saying something is merely hidden or private.
2Adverb use: 極秘( に 調査( する
- Here 極秘
( works adverbially with に, modifying 調査( する. - The full idea is “to investigate in a highly confidential way”.
3〜するとしましょう softens the declaration a little
- Rather than a blunt 調査
( します, 調査( するとしましょう has a slightly performative “all right, let’s proceed that way” feel.
4承知( しました is formal and businesslike
- 承知
( しました is a polite “understood” often used when accepting a request or instruction. - That formality matches the client-facing situation, even though Mouri’s double exclamation marks show his excitement.
Vocabulary
承知 (Consent)
承知
( means knowledge, understanding, or consent. In conversation, it often means “understood” or “certainly”.極秘 (Top secret)
極秘
( means top secret or strictly confidential.調査 (Investigation)
調査
( means an investigation, survey, or detailed examination of the facts.
See Also
- Future entry: Past tense with 〜た・〜だ
- Kanji: Investigation and inspection with 査
名探偵コナン © its respective creators. It is used here for educational commentary.