The speaker imagines a future where both they and someone close to them are well. The wishes are small and specific, which makes them hit harder. The speaker wants to love themselves, to have "clear" wrists and a clear mind, and to see the other person eat the way they used to. The detail about blue under-eyes suggests that person is exhausted and unwell. Judging by the imagery, the speaker may be dealing with self-harm and perhaps depression, while the other person may be struggling with an eating problem, though the poem never says so outright.
The mood is tender and sad. The simple, rhyming lines sound almost like a children's rhyme, and that gentle tone sits oddly against the heavy subject. By the end, "Neverland" reads as a place of escape, somewhere the two can be together and whole. Because the speaker only dreams of it, the poem also feels like a quiet admission that this healing hasn't happened yet.