The story centers on a girl named Maika who gets a job at a cafe where all the waitresses are given certain attributes — such as "tsundere" or "little sister" — to embody while serving customers. The manager asks Maika to be the "Do S" (extreme sadist) waitress, so she will have to adopt a dominant and aggressive persona.
 
(Source: Anime News Network)

High schooler Maika Sakuranomiya can't seem to land a part-time job, so when an opportunity comes knocking, she's up for anything. Waitressing at a cute café—sounds perfect! The manager demands that each waitress adopt a quirk in their service? Not a problem. Maika's ready to act flirty, or hot-and-cold, or like a little sister, or…sadistic?! Oh. That might be a tough one for our cheery and caring heroine! The original manga behind the popular anime!
 (Source: Yen Press) 
 Note: Chapter count contains 8 newly written chapters (one per volume) and 1 extra chapter (vol.7: 番外編 ; Comic Fuz 2020-09-28)

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