Inventor of "useless machines", Marina Fujiwara:
クリスマス、ほんとうに嫌ですね
(I really hate Christmas)
So she invented a device that whenever someone Tweets 別れました ("parting" or "breakup") it lights up a lamp
She literally invented a breakup notification machine😅
The article is Japanese
https://ch.togetter.com/2019/12/16/76796