At each Mister Donut store (excluding some stores), a sale of donuts "various" for 108 yen and pies for 129 yen (both including tax) is being held from January 26th to February 1st.
I'm doing a donut sale at Mister Donut!
It seems that some donuts (Mister Croissant donuts, etc.) are not covered, but it seems that more types of donuts are targeted than the usual 100 yen sale. The pie, which is usually hard to sell, costs 129 yen.