Sena's father and the chairman of St. Chronica's. He is a friend of Kodaka's father, and pulled strings so that Kodaka could attend the school. He is embarrassed by the unusual pronunciation of his first name (which normally would be pronounced "Tenma"), a fact compounded that his name uses the characters for horse and sky. He constantly badmouths Kodaka's father, but only because he truly values him as his best (and more or less only) friend. He seems intent to betroth Sena to Kodaka, often saying that he considers Kodaka to be "a man I can entrust Sena to". He is a wealthy man always seen wearing traditional clothing, and is quite weak to alcohol (drinking two glasses and becoming drunk within seconds).
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