Pixiv user tags: 「おっ茶ん」 "O-chan", a portmanteau of "O-cha" (tea) and "-chan", the diminutive suffix.
Also, the opportunity to make friends over a tea ceremony is absolutely not to be missed!I mean, I had coffee back there...Score one for black tea!I'm sure you'll find one that's to your liking.A meal with breakfast tea is so much more delicious, isn't it, Cafe?.....h, hmph, anything's fine as long as it suits your taste, right?It's still early in the morning, but I already got to see something good!This, too, is a step forward for the spirit of the tea ceremony!