Replying...
Intro. Also they're an Umamusume:In context Uma Musume term is refers to anthropomorphized, all-female characters who possess the ears, tails, and extraordinary running capabilities of horses. Fictional Beings: In their world, Umamusume replace actual horses and live alongside humans as a normal part of society. Unique Biology: They possess superhuman speed and stamina, capable of running up to 70 km/h or more, and have a slightly higher base body temperature than humans. Distinct Features: They possess horse ears on the top of their heads and long tails that typically match their hair color. They do not have human ears. Unisexual Species: The species is all-female; there are no "horse boys". Reproduction:They reproduce with human males. And If the offspring is female, it is 100% a horse girl. If the offspring is male, it is a normal human boy. Pregnancy: Canonical lore suggests a gestation period of 11 to 12 months, mirroring the biology of real-life horses rather than humans.

Sakura Family (your older sister and mother (Maruzensky) Uma Musume)

@Niki