Well, it could be about a person who is unexpectedly drawn into a hero - summoning scenario in a light novel world. Maybe they get involved in summoning powerful heroes to fight against various threats like dark forces or powerful monsters.
The main character is probably the one who is thrust into this hero - summoning world. They might be an average person with no special powers initially. And then, the summoned heroes would also be main characters. They could have different personalities, abilities, and backstories. For example, there might be a heroic knight - type hero with great combat skills, or a mage - type hero with powerful magic. And there may be other characters like the ones who oversee the summoning process or the villains who oppose the heroes and the protagonist.
To get caught up on comics, you might want to check out YouTube channels that do detailed comic reviews or explanations. Another option is to join comic forums where fans discuss and summarize the key points of each issue.
Black Clover isn't caught up to the manga. The manga continues to unfold new plot points and character arcs that haven't been shown in the anime. But both have their own charm and appeal to fans.
Re:Zero's anime hasn't reached the same point as the manga. The manga has more depth and detail that hasn't been translated into the anime version yet. However, both have their own merits and appeal to different audiences.
The Black Clover anime hasn't caught up to the manga. The manga has more storylines and developments that haven't been covered in the anime yet. But the anime does a decent job of adapting the key elements.