Ep. 6: Saku conhece o novo professor Nozomu Sōma no meio de rumores sobre sua ligação com Mihoshi

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The new semester starts and on the bus to school Saku notices a tall man also getting off at the school. During the welcome back ceremony, the man that Saku saw earlier is introduced as a new teacher named Nozomu Sōma who is in charge of Saku's class and world history. Mihoshi calls him "Sō-nii" in front of everyone and rumors abound as to what their relationship is. Later, Sōma becomes the astronomy club's adviser and he explains to the others how Mihoshi's father was his professor at college and also the club adviser for their astronomy club. Sōma wants the club to do a planetarium for the upcoming cultural festival and they get in the top three in a popularity contest in exhibits, the club will get more funding. Saku becomes annoyed at Mihoshi's and Sōma's relationship and is approached by Fumie to help with the literature club. (Source: Wikipedia)