Also known as: ホースの暗黒面, 史実親子
An image that alludes, spoofs, or otherwise parodies the oftentimes complex real-life familial relationships of the racehorses that the Umamusume girls are based on.
Note that the only familial relationship that is acknowledged canonically in Umamusume is the one between siblings (born from the same dam) and even then, only in the case where the mother isn't also a student character. A good example for this is the V Sisters. In their case, it would only be an example if any of Halwa Sweet (Racehorse), Deep Impact (Umamusume) or Heart'S Cry (Racehorse) are also present.
So far, there are many father-child pairs (e.g. Rudolf and Teio) but only five mother-child pairs in Umamusume: Fusaichi Pandora (Umamusume) and Almond Eye (Umamusume), Cesario (Umamusume) and Epiphaneia (Umamusume), Air Groove (Umamusume) and Rulership (Umamusume) as well as the Air Groove (Umamusume), Admire Groove (Umamusume) and Duramente (Umamusume) mother-mother-child chain.
The name of the Pixiv tag The Dark Side of the Horse refers to the complicated bloodlines of racehorses as a result of their breeding procedure, in which a single sire has several partners, with Incestuous pairings being common to further strengthen the strong bloodlines.
Examples
- The Sunday Silence (Racehorse) family
- Rudolf & Teio & Tsuyoshi (Father & Sons)
- Gold Ship (Umamusume) & McQueen (Grandson & Grandpa)
- Tachyon & Scarlet (Father & Daughter)
- Maruzensky (Umamusume) & Sons, Grandchildren, and Great-grandchildren
- King Halo (Umamusume) & Kawakami Princess (Umamusume) (Father & Daughter)
- Bakushin & Kitasan Black (Umamusume) (Grandfather & Grandson)
- Gimlet & Vodka (Umamusume) (Father & Daughter)
- Tact & Kris S, Cesario (Umamusume), Heart (Granddaughter, Paternal Grandfather and Grandmother, Maternal Grandmother)
- Pocket & Jordan (Father & Son)
- Air Groove (Umamusume) & Admire Groove (Umamusume) & Duramente (Umamusume) & Kiseki (Grandmother & (Mother+Son) & Grandson)
- Spe & Cesario (Umamusume) & Buena (Father & Daughters)
- Ryan & Dober (Father & Daughter)
- Ryan & Bright (Father & Son)
- Pandora & Ai (Mother & Daughter)
- Yuni & Pisa & Earth (Father & Sons)
- Cafe & Red Desire (Umamusume) (Father & Daughter)
- Rulership (Umamusume) & Kiseki (Father & Son)
- Spe, Cesario (Umamusume), Kris S & Epi (Maternal Grandfather, Parents & Son)
- Orfevre (Umamusume), Lala & Marche (Father & Daughters)