You could try searching on popular fanfic websites such as Archive of Our Own (AO3) or FanFiction.net. Just type in 'alvin x presa fanfic' in their search bars and see if any relevant stories come up.
There are several places to look for it. First, check the official forums or communities related to the source material of Alvin. Sometimes fans share their fanfics there. Also, as I mentioned before, AO3 and FanFiction.net are great resources. Additionally, you might want to look on Tumblr. Some users post links to fanfics there, so search for the relevant tags.
Well, without having read the 'alvin x presa fanfic' directly, it's hard to say precisely. However, if Alvin is a well - known character, perhaps it's a story that reimagines his story in a new context with the character or concept of 'presa'. It might involve things like a new mission, a different kind of friendship, or a struggle against a common enemy.
In a fanfic where Alvin is in prison in the 'Alvin and the Chipmunks' universe, it could be a really interesting take on his character. He might face challenges from other inmates who don't like his upbeat and sometimes mischievous nature. However, Alvin could also bring some positive change to the prison, like starting a music group among the inmates to pass the time and boost morale.
One possible reason for Alvin's depression in a fanfic could be the pressure of constantly being in the spotlight. As the lead chipmunk, he always has to be on top of his game, whether it's performing or coming up with new ideas. This unending stress might lead him to feel down. For example, in a big concert coming up, he might feel like he's not good enough and start to doubt himself, which could be a start of his depressive state.
One possible plot for such a fanfic could be that Alvin gets separated from the group during a concert tour. He might find himself in a small town and has to rely on his wits to get by. He could meet new friends who initially don't believe he's a famous chipmunk but eventually help him reunite with his brothers.
In an 'Alvin and the Chipmunks' Alvin prison fanfic, Alvin could face a lot of difficulties at first. He is used to a life full of freedom and fun with his brothers. In prison, he might be lonely and scared. But as time passes, he could learn to adapt. He could teach the other inmates about music and harmony. His positive attitude could gradually change the prison culture. He might even find a way to communicate with his brothers outside, through secret messages or smuggled notes, and they could be working on a plan to get him out.
There could be the elder weremunk. This character would be very wise and have a lot of knowledge about the history and traditions of the weremunks. He could guide Alvin on his journey to becoming a weremunk. Another possible character is the rival weremunk. This one might not like Alvin joining their group and tries to cause trouble for him.
One common theme is friendship. Since they are part of the same group, many fanfics explore how their friendship grows and changes over time. It could be about them becoming closer friends through shared experiences like going on tour or dealing with a difficult performance.
I'm not sure who Alvin Zhou specifically is in this context. He could be a real person who has some connection to BuzzFeed Tasty, or perhaps he's a fictional character created specifically for this fanfic.
His depression could be shown through his behavior. He might stop being as energetic as he usually is. For instance, he won't be the first one to jump into a new adventure or come up with a crazy plan like before.
There could be a vampire hunter who is after Alvin. This hunter might be an old acquaintance who now sees Alvin as a threat.