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In the latest #RurouniKenshin episode, I heard Megumi say:

気になったから来ちゃった。
kininnatta kara kichatta

The first word is the past-tense of 気になる (to be on one's mind, to be worried):
https://jisho.org/word/%E6%B0%97%E3%81%AB%E3%81%AA%E3%82%8B

The last word is 来る (to come), but with the ～ちゃう suffix in the past tense (～ちゃった), adding a nuisance of coming "accidentally", or just passing by.

https://jlptsensei.com/learn-japanese-grammar/%E3%81%A6%E3%81%97%E3%81%BE%E3%81%86-te-shimau-%E3%81%A1%E3%82%83%E3%81%86-meaning/

So the whole sentence means: "It's been on my mind, so I passed by".

#anime #japanese