The song "Futari No Sekai" by Aimyon is about a relationship where the protagonist wants their partner to love them forever and never leave. They describe the little things they do together, like kissing when they leave or come back home, hugging before going to sleep, and having sex even when they're not sleepy. The protagonist admits that their partner isn't always very kind and tends to focus on work, but they still love their partner's voice and laughter. They wonder when their partner will start hating them, but they feel guilty for always expecting bad things. They ask their partner not to say goodbye, but ironically, it's always the protagonist who says it. Even though they have doubts and fears about their future, the protagonist feels happy and fulfilled in their relationship. They also mention how they know their partner's habits, like the coffee they buy at the convenience store, but sometimes make mistakes. The protagonist loves their partner's wrinkled smile and hoarse voice, and they feel happy just being with them. They've never thought of themselves as happy just being close to someone before. However, they want to make it clear that they don't hate their partner, even though they don't always understand why they cry. The protagonist admits to being selfish and always wanting their partner to love them. They ask if it's wrong of them to feel this way, and even though they sometimes feel a little bit of dislike, they are happy in their relationship. Despite their fears and insecurities, they feel fulfilled and loved.
