Japanese with Manga

Lack of interest with

Grammar: Unsorted » 知ったことか

知(し)ったことか dismisses a matter as none of the speaker’s concern: “what do I care?” or “that’s not my problem”.

Usage Notes

知ったことか is dismissive and rough. It rejects responsibility similar to “what do I care?” or “that’s none of my concern”.

Examples

Don't care if it troubles you with 知ったことか

Learn the meaning and usage of the grammar 知ったことか in Japanese, with examples from manga.
三ツ星カラーズ » Volume 1 » Page 138

Oyaji presented Colors with a bomb to defuse via a riddle, which led to problems for Officer Saitou. After Colors successfully defuses the bomb, Saitou tells Oyaji to stop playing bothersome games.

おやじ:
「子供(こども)のためだ。お前(まえ)が迷惑(めいわく)被(かうむ)ろうと知(し)ったことか」
“It's for the kids. I don't care if it will cause you trouble.”