When it comes to long-running shonen anime, Black Clover stands out. It has offered a mix of magical world-building, meaning of perseverance, and a wide cast of compelling characters. In this story, one of the earliest subplots is Asta’s deep affection for Sister Lilly. Lilly was none other than the nun from the church where he was raised. But fans who’ve followed the series closely often wonder: Does Asta ever marry Sister Lilly?
No, Asta does not marry Lilly in Black Clover. With how the narrative was set, it was never a real possibility. Sister Lilly has time and again politely declined Asta’s romantic advances throughout the series. While Asta’s feelings are genuine, they stem from his youthful admiration for the kind and caring nun who raised him. Sister Lilly, however, has always viewed Asta as someone important, like a family member.
Furthermore, her status as a nun means she has taken vows that prevent her from marrying or pursuing romantic relationships. Black Clover has used their dynamic just for humor in the early episodes. Initially, it was funny to see Asta desperately try and ask Sister Lilly out just to be turned down every time.

Asta grew up in the church at Hage Village, where Sister Lilly helped raise him and the other orphans, including Yuno. Asta's romantic feelings towards her started early and were likely influenced by her kindness and the fact that she was a constant, caring presence in his life.
As the feeling of infatuation started at a young age for Asta, he did not have anyone to learn the difference. On the other hand, Sister Lilly is a nun who has taken vows that include celibacy. Even if she had not, she sees herself as a caregiver and spiritual guide.
If she were to accept this proposal, it would mean that it would go against everything she believes in and has dedicated her life to. Additionally, there’s a significant age and maturity gap between them. Sister Lilly treats Asta with deep affection, which is the love of a guardian, not a romantic partner.
Asta’s growth and his true romantic interest in Black Clover

As the story progressed, Asta gave up on pursuing his romantic advances on Sister Lilly. His attention begins to shift, particularly toward a fellow Magic Knight, Noelle Silva.
Initially, she struggled to come to terms with her feelings for him and often ended up hiding her true intentions behind insults or prideful declarations. But as they continue to fight side by side, it becomes clear that Noelle has developed deep, complex feelings for Asta.
For the longest time, Asta was oblivious to Noelle’s feelings at first. He was focused on his missions, his rivalry with Yuno, and his early infatuation with Sister Lilly. However, Noelle's devotion and emotional growth become impossible to ignore.
Interestingly, unlike his one-sided love for Sister Lilly, Asta and Noelle share a dynamic that is more balanced and full of mutual respect. While Asta hasn’t explicitly returned Noelle’s romantic feelings yet, he clearly holds her in high regard.
To sum it up, while Asta never marries Sister Lilly and never will, this isn’t a sad ending. It is a sign that the protagonist in Black Clover has matured and let go of his childhood crush. And with this, he is finally able to focus on what he is truly meant to be.
Finally, Asta now has a chance to find someone who would treat him with respect and reciprocate his feelings. That could be Noelle, but fans have to wait to confirm this pairing.