The pinnacle of education in Rinjoh, Rinjoh University is a cutting-edge post-secondary institution. Its main campus is located in Lemon, but it also has a small auxillary campus in Lychee.
Professors Spruce, Mangrove and Sumac are all affiliated with this institution.
The main campus, consisting of the administrative offices, classrooms, research labs, student residence and main library.
Though now an auxillary campus, Rinjoh University was originally founded in Lychee before being moved to Lemon City. The buildings that remain as the university's property are of historical significance, but are mostly just used to house archives as well as a few high-ranking administrators' offices.