Ace of Diamond - Sweet Coffee Café au Lait BITTER (Doujinshi)

Pairing: Miyuki x Sawamura

Sawamura went to the vending machine to buy a milk coffee. However, he pressed the wrong button and got black coffee instead. When Miyuki saw him, he offered to buy him milk coffee since he likes the bitter one anyway. Then, they went to the staircase and while they were there, Miyuki did some advances to Eijun.

Reprinted in M/S Short Stories 2013-2016 alongside newly drawn sequel story "sweet espresso"