Too many decades in Japan, but surprised to find that "kawaii" ([Japanese-style] cute, adorable, etc.) has become a loanword in English. Many technical or other English terms that I use are not in the Scrabble Dictionary, but kawaii is. Cuteness is ubiquitous in contemporary Japan, and apparently getting exported. The attached screenshot is from our family LINE group.
I have always advised college students to use Romanized Japanese terms in sentences if there is no English equivalent. This lengthy "List of English words of Japanese origin" would have been handy when I was teaching classes of mixed international and Japanese students. You might also find it of reference or interesting: https://en.wikipedia.org/wiki/List_of_English_words_of_Japanese_origin