Very sad to hear :( Trying to listen to the video right now to see what I can decode from it.

• tweet source: https://x.com/Dexerto/status/2003851656190996669
• an article in english: https://www.animesenpai.net/himouto-umaru-chan-author-sister-passed-away/
• direct source in japanese: https://www.youtube.com/watch?v=XaHCwyLNQ-Y

deeple translation of the comment of the author on youtube after posting the video:

Thank you all for listening to my sister's story.

I realized that if I didn't share this now that I've started YouTube, I probably never would have spoken about it. I decided to record it in a video to help myself move forward. Reading your kind comments—I can't quite put it into words, but it feels like time that had been frozen has finally started moving again.

I hope this becomes one small step toward helping everyone cherish the everyday moments of simply talking with the siblings and family members around them.

Some people in the comments are saying that the manga ended abruptly, "like it was just another day". Which makes sense now... Back then the news wasn't shared as to not change how people viewed and enjoyed the series.

Transcription and translation as best as I could from 18:41:

Umaru-chan te yuu character o wa boku no imouto nandesuyo, nande, uumm, yokereba wasurenai de itadakitai na

Umaru-chan's character, is my little sister, um, it would be great if you do not forget that