I have a really short attention span (like most readers) so a comic usually has to be interesting in the first chapter. The first chapter serves as an introduction, telling readers what the author is trying to offer them. Authors should really work on the first chapter/introduction just as hard as the climax. It should be interesting enough to pull in consistent readers.
Here are some factors that affect my interest in reading a comic:
The first chapter must be able to tell what the entire comic is about . Here the premise and main characters are introduced. Most of the time I read introductions that start with characters conversing about a really specific topic/ event only two of them know about. This is confusing since I know nothing about the world,life, etc about the characters. By the end of chapter one/ introduction the premise must be clear. I honestly think it is too troublesome to have to read a lot of chapters before I have to find out what's going on. That feels like it's too much work. I don't like work D:
Have you seen Stein's gate? It's a good anime but the first half of those series were REALLY boring. * I didn't understand what was going on because they revealed too little about the plot and it was progressing too slowly*. I postponed watching it and continued after half a year just because my sister really wanted me to watch it.
Likeable characters and Mary sues. I tend to continue reading if the characters who I can root for and characters who are relatable and realistic. I can't tolerate mary sues.
**A unique premise **
I tend to read stories with unique and original premises. This is why it's always best to write about what interests the writer rather than what is popular. Vampire romances and "the chosen one" plots are too common.
**
That's my opinion. I hope I was able to contribute something.