I think it's fine; SFX are (IMHO) optional unless essential to the joke/plot, and plenty of other comics from this series leave the title untranslated, i.e. post #127070
Let me go!
Let me go!Look! I got it for 500 yen!It's so nice and fluffy! I'm gonna snuggle it every day when I sleep!OK, OK. Let's all go sleep nicely together