Sad

I think they rushed the 'falling in love' part, way too fast.

They completely skipped over the ML's falling period, summarising it as the FL lead being interesting and novel, and 'not like other girls'.

FL's falling period was kinda weird too cause there was no point where it was like, oh you're in love you just don't realise. It was a, boom you're in love now take all these insecurities go fetch.

Relationship wise it's realistic as they're both communicating in different languages and although tries to understand each other, they fail, leading to bug arguements.

It's also unrealistic as usually these relationships break apart, because even when they communicate, they don't really understand each other. But obviously, they aren't going to break up in the end.