Shita Kanda Toki to Daitai Issho舌噛んだときと大体いっしょ; It's Pretty Much the Same as When You Bite Your Tongue.

Kiiro Tori is a passionate and energetic manga editor. One day, Toru, a manga artist she has been pursuing for years, invites her to meet for the first time. Kiiro is excited, but just before the meeting, she learns that Toru has posted on social media about quitting being a manga artist...!? (Source: Shodensha, translated)