Yohan is the best at making the world's worst coffee. He is the semi-timid manager of Café Goyo which is named after him, and though he is in charge of everything, he is said to be unable to make good coffee. He apologizes to Soohwa after being startled by him before Gyoon informs him that Yohan is deaf. Gyoon notes that Yohan rarely speaks since he thinks it is awkward not being able to hear his own voice.
Using sticky notes, Yohan states that Soohwa can just talk to him normally and that he can read his lips. With Soohwa learning sign language, Yohan types on his phone offering to teach him further.
Yohan has an interest in gardening and says he likes plants. Although with his store's menu has to capacity to be a restaurant, he says it'll stay a café because it seems cooler.
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