Miharu and Daiki. Multiple stories:
Case 1 - Shunya, the straight power
Case 2 - Mr. Bland I'd getting married
Case 3 - Old man Wakayuki
Case 4 - Satoru and Kazu break up/Tasting Daiki
Case 5 - Million Dollar Boy
Case 6 - Beefy bottom cross dresser
Case 7 - Hazuki, the mini Miharu
Chaper 8 - continuation from case 7/ flip tucking Daiki
Chapter 9 - Daiki gets attention from customers/Miharu shares his disguise
The Secret Case Files of the Cafe April