Blend'n Sitres is a fan Pop'n Music clone(that is way better than Beat'n Groovy) starring the main duo; Mousse & Custard and their band, Sitres.
Mousse & Custard were labeled as Tart & Toffee and Torte & Parfait's bodyguards and then later on as mainstay mascots. They are tagged along with their pets/partners, Pudding & Gelatin who are shiba inus but looked similar to Parfait. Their ongoing (evil counterpart) rivals are Plan10; Macaron & Crumpet with their pet English bulldog; Bugne but sometimes became neutral with them in other installment. Custard & Pudding's love interests are Namagashi & Dango; Fundoo for Two.