The conclusion of Spider-Man: Brand New Day has sparked considerable debate among fans regarding the fate of Peter Parker's erased memories, particularly concerning his relationships with Ned Leeds and MJ. The film depicts Peter's ongoing struggle with self-imposed isolation, having sacrificed his personal connections for over four years following Doctor Strange's spell in No Way Home. Despite this, he maintains a distant awareness of Ned and MJ, even observing them from afar and attending a house party they hosted.

The narrative takes a turn when Ned and MJ find themselves in danger due to Jean Grey's psychic influence. Spider-Man intervenes, marking a potential first step in reconnecting with them. However, the film's final moments have left the audience questioning the efficacy of Doctor Strange's memory-wiping spell.

Following Jean Grey's departure, Ned and Peter encounter each other in a store. As Peter approaches to introduce himself, he and Ned perform their signature elaborate handshake, a gesture they have shared numerous times in the past. Ned exhibits confusion, acknowledging the familiarity of the handshake with a stranger, but then utters Peter's name. This moment is intentionally ambiguous, leaving viewers uncertain whether Ned has regained memories of his friend or is simply connecting disparate pieces of information, having previously learned that Spider-Man's name is also Peter.

This ambiguous scene has fueled various fan theories. One prominent interpretation suggests that Ned's muscle memory, honed through repeated actions, allowed him to execute the handshake even without conscious recall of Peter. This concept draws parallels to how video game players or musicians internalize complex sequences through practice, embedding them into neural pathways. This theory posits that such deeply ingrained habits can persist independently of episodic memory.

Another prevalent theory centers on Jean Grey's telepathic abilities. It is speculated that her mind-altering influence over the city might have unintentionally resurfaced buried memories of Peter. Supporting this, MJ is shown later with a necklace Peter gifted her, hinting at a possible recollection or a profound sense of loss for a forgotten part of her life.

Conversely, earlier in the film, Jean Grey, while manipulating MJ, explicitly states that MJ has no memory of Peter, reinforcing the thoroughness of Doctor Strange's spell. The question remains whether the combined forces of friendship and a potent psychic event could overcome powerful magic.

Adding another layer to the speculation is Ned's own latent magical potential, previously demonstrated in No Way Home when he opened portals. Some fans theorize that this ability might have subconsciously protected his memories of Peter. However, these are currently speculative interpretations with little direct evidence from Brand New Day itself.

While Spider-Man: Brand New Day does not currently have confirmed appearances in upcoming MCU projects, the post-credits scene strongly suggests a role in Avengers: Secret Wars. This implies that a definitive answer regarding Ned's memory may not arrive for some time. Some fans appreciate this open-endedness, viewing it as an invitation for discussion and allowing creative flexibility for future storytelling. Others, however, express concern that this unresolved emotional arc could be overshadowed by larger multiverse events.

As one fan noted on Reddit, the ambiguity might stem from the creative team itself: "I don’t think even the director and writers know, which is why they left it so open ended." This sentiment suggests that the lack of a clear resolution was a deliberate choice, leaving room for interpretation and future development. Nevertheless, the coming years are likely to see continued fan analysis and debate over the precise meaning of this pivotal final scene.