I'm still learning the language but I'm glad I can understand the bare minimum in your comment... are you saying you like this manga..? and it's sooooo good??
@Your average girl I just said that I'm happy to see someone that can speak a little German :) And...tbh your sentence made me a little laugh. The words are correct but the sentence structure is very weird. The correct sentence would be: "ooo! Uhh ...ich kann das nicht verstehen--" But it's still pretty good! Are you English? Cuz the sentence structure is exactly how it would be in English. Sorry if my English is a little weird to read cuz I'm not really good at English...
Eine alternative wäre auch: "Das verstehe ich nicht" it sounded a little like a robot in the way you said it. Or just VERY simple: "Was?" And if you don't know that, "was" means "what" :)
@AGermanCat ahh no- I'm not native at English and because I know it's grammatically incorrect including the sentence structure but for some reason I go with the English thing..