DY-e-chryb (‘y’ as in ‘scythe’)
a forceful and bitter verbal attack against someone or something
‘Kaguya’s diatribe against the French lady was, in hindsight, rather embarrassing.’
tirade, harangue, denunciation, broadside, fulmination
Kaguya-Sama is now my second-favourite comedy anime, after The Disastrous Life of Saiki K. They’re quite similar – small episodes, funny facial expressions, internal monologue, and great writing. I highly recommend both.
Totally not creepy.
Have a nice day!