The picture at the end of the chapters is from?

I think its from the manga The Summer Hikaru Died

It's kim dokja from Omniscient reader's viewpoint (ORV)

Art style from the novel, so it's different from the manhwa (art style)

If you're referring to chapters uploaded by me, that last image is Kim Dokja from Omniscient Reader's Viewpoint, drawn by Blackbox, the novel's artist. ヾ(☆▽☆)

Thank you!

It’s so pretty, I will try to find the novel art, thank you!

Yes, correct. Thank you so much for the info. I was always curious who it was. (⌒▽⌒)