look like Eirin got her to work some how so she can't go to natsu-komi
"Hello? Ah, Master?""Eh? A commission for a major job? Two of them?"
"But tomorrow is... Ah... Yes... I... See...""You guys have fun together... At Natsu-Komi..."Gensou Engineering Firm"Ah, it's the mailman!"Along with a sweet fragrance, the lovely girls came out to greet me.They are pupils of the Madam, here learning how to make sweets.Their sweeter-than-candy smiles reveal how much they are looking forward to tomorrow.It appears they are working wholeheartedly on cookies that they'll be bringing to a festival tomorrow called Natsu-Komi or something. Natsu-Komi -> Summer Comiket/Comic Market