So, the chapter title is just his name. Here's Furinkan's full note regarding it: "白眉 Hakubi (白眉) translates as "white eyebrows" which is appropriate considering that even before his immortality bleached his hair Hakubi had white eyebrows. His current alias, "Captain Shirasu" (白洲). Shirasu means "white sand bar" which again connects to the "white" in his true name, Hakubi." Someone mentioned last thread that the term also refers to someone who is "the best of" something. This is apparently due to a Chinese legend. Oh and 白洲 apparently also refers to the court of law during the Edo period because they sat in the sand.

July 22nd, 2020. Author's note:
"Q: What's something you've been saying for a long time but no one believes?
A: Saying you'll feel better if you eat something."