Tập 4: Buổi học nhóm giữa kỳ hé lộ những cảm xúc thầm kín và những xung đột nguy hiểm giữa các bạn.

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As Midterm Exams approaches, the Dogs begin a 72-hour study session with Persia disguised as Julio. Maru is revealed to have a crush on Julio after Julio defeated him to save Inuzuka, not knowing Julio is Persia in disguise. The session is led by Hasuki who has the best grades. Inuzuka helps Persia sneak out but is caught by Hasuki who worries he is keeping secrets. Char warns him of the risk Hasuki poses. Inuzuka insists Hasuki is his best friend and would keep his secret if she found out. Maru asks Hasuki why she likes Inuzuka and she reveals that Inuzuka helped her make friends. Inuzuka overhears so she confesses she loves him. Realising he cannot lie to her he reveals he is dating Persia. Hasuki overreacts, tries to force him to commit suicide then tries to behead him when he flees. Persia follows them into the woods where Hasuki almost kills her but is stopped by Char who admits she knew Persia was dating Inuzuka. Inuzuka feels worthless as he cannot even be honest with his best friend. Persia assures him he is just as strong as the day he confessed to her. Inuzuka allows Hasuki to attack him, claiming he will never stop being her friend, surviving only because her sword was a replica. Persia falls into the river so Inuzuka jumps after her. Inuzuka, who cannot swim, is saved by Hasuki while Char saves Persia. Hasuki claims she still hates him but decides they are still friends, though she will behead him if he flirts with Persia in front of her. (Source: Wikipedia)