The song "Set U Off (365)" by Underscores is about the ups and downs of a relationship and the protagonist's struggles with their own insecurities. The lyrics depict the narrator's experiences and emotions while traveling and being away from their partner. The song begins with the narrator expressing their excitement about returning home ("Tadaima"), but they hesitate to talk about a certain issue. The line "Say the thing, bitch!" suggests that someone is pushing them to address a difficult topic. The lyrics then shift to the protagonist's journey back home, describing the long hours spent traveling and the financial strain they are under. They anticipate reaching their destination where they will be with someone else, possibly their partner. The following lines touch on the narrator's past experiences and personal struggles. They mention being in the same district for a week, implying a stagnant and monotonous routine. They also mention a nicotine addiction and feeling uncomfortable with having their picture taken, possibly due to a desire for privacy. The chorus reflects the protagonist's fear of not being good enough in their relationship and the worry that they might get stuck in a cycle of unhappiness. The second verse expresses the narrator's regret and acknowledges their mistakes. They mention wanting to avoid conflict and just enjoy the present moment, while hoping their partner can come through for them. Here, the line "What have I done" suggests a feeling of guilt or regret for their past actions. The bridge of the song further discusses the protagonist's insecurities and their self-destructive behavior. They mention acting out and having evidence to support their actions, but also feeling stupid and not sad enough. The line about making music again implies that it serves as an outlet for their emotions. The song concludes with a reference to being in Tokyo and struggling with the language barrier, emphasizing the protagonist's feelings of being lost and unable to fully communicate. The final line expresses the narrator's remorse for possibly setting their partner off or causing them distress. Overall, "Set U Off (365)" explores themes of insecurity, regret, and the complexities of relationships. The song conveys the narrator's personal struggles while reflecting on the challenges of maintaining a healthy connection with another person.