Takuma Hasumi

About

Takuma is the son of Akari Hirai and Teruhiko Oogami. After Akari gave birth to him, Teruhiko abandoned him in a temple according to their deal. Takuma was then taken to an orphanage called Tsutsuji no Oka (Azalea's Hill), and got this name from the orphanage dean, inspired by his horse-shaped birthmark. Later, the orphanage staff found out about his natural ability to not forget anything and thought he was a genius, but were disappointed when they realized he could only store data, but not actually put them together to solve problems.

(Source: JJBA Wikia)