How to say “He fills the kettle to the top for a single cup of tea, every time.” in Japanese
In Japanese
あの人、自分のお茶を一人分淹れるだけなのに、毎回電気ケトルをいっぱいにして沸かすんだよ。
Ano hito, jibun no ocha o hitoribun ireru dake na noni, maikai denki ketoru o ippai ni shite wakasu n da yo.