Kei, the chef
Kei is a chef. Sunny Lab's design post places the introduction in chapter 4 and names anger as the mood around that story. Relationship rank 2 has a Steam achievement. Cooking with Kei, Estelle, or Best is how some recipes unlock, according to the achievement notes.

I do not have a store screenshot that puts Kei's name in the dialogue box, so this page does not invent a face. The design post and the achievement schema are the whole official file. A walkthrough says you train the relationship inside Kei's restaurant. That is a guide's staging, and I keep it labeled as such.
Cooking and the chapter count
Chapter names in a TheGamer achievement guide run to five, while the Steam schema exposes Chapter1 through Chapter4 complete plus a separate GameComplete. Kei's chapter 4 arrival fits the fourth story achievement, The Sculpture in the Furnace, which 1.7 percent of players had on October 17. I am not going to renumber the chapters to force those two lists into one.
Questions this page answers
When do you meet Kei?
Sunny Lab's design post says chapter 4.
Is Kei a romance option?
No. The FAQ limits romance to Estelle. Kei has a friendship rank.
Keep going
Sources
- Sunny Lab, “Designing Kei” — Official design post: chef who arrives in chapter 4, themed around anger.
- Steam store page for The Witch's Bakery — App 2967950 price, date, tags, languages, screenshots, and review summary. Checked 2026-10-17.