A freeloading child with 居候

欄(らん):

「あ、コナン君(くん)　お帰(かえ)り！」

“Ah, Conan, welcome back!”

春菜(はるな):

「あれ　息子(むすこ)さんもいらっしゃったんですか？」

“Oh? You have a son, too?”

小五郎(こごろ):

「いえ、こいつはウチで預(あず)かってる居候(いそうろう)で…」

“No, this kid's just a freeloader we’re looking after...”

Key Points

1. 居候(いそうろう) = someone living in another household

   • Here 居候(いそうろう) describes Conan as a child staying in Kogoro’s home rather than as Kogoro’s son.

   • The word often carries a dependent or freeloading nuance, which fits Kogoro’s dismissive tone.

2. 預(あず)かってる = “we’re looking after” or “have in our care”

   • 預(あず)かってる is casual speech for 預(あず)かっている, the progressive/result state of 預(あず)かる.

   • In this scene it means Conan has been entrusted to the household, so Kogoro is responsible for him but not his parent.

3. ウチで marks the household, not just the building

   • ウチで means “in our household” here, setting where Conan is being kept or looked after.

   • This supports the contrast with 息子(むすこ)さん: Conan belongs in the home for now, but not as family in the way Haruna guesses.

4. Casual correction after いえ

   • Kogoro’s いえ rejects Haruna’s assumption that Conan is his son.

   • こいつ is a rough, familiar way to refer to Conan, so the line sounds casual and blunt rather than politely explanatory.