Yui, in line with Zeus' attempt to model the school after human schools, decides to introduce club activities, something that Thoth decides to make compulsory as well. While everyone is excited and interested, Hades refuses to participate in group activities. Yui later finds out that while Hades is constantly gloomy and introverted, he enjoys stargazing. Despite his claims that misfortune will befall her if she gets too close, Yui refuses to leave him alone, especially after he saves her from drowning. From Apollon and Dionysus, she makes Hades' favourite strawberry rice cakes to cheer him up, prompting him to reveal a hideous tattoo on his upper chest caused from the grudges of many that regret their deaths -- the cause of misfortune. As he once again rejects her, Yui believes that he is looking out for everyone's sake by isolating himself, and determines to make him happy. (thetvdb.com)