It could be that the MC has a specific goal or mission that requires the purchase of slaves for mana. Maybe there's a magical rule or requirement forcing them to do so. Or perhaps it's a morally ambiguous decision made for a greater good that will be explored later in the story.
Maybe it's part of a complex plot twist or to gain some sort of advantage in the story's world.
The reason for the MC buying slaves for mana in the manga could be tied to a hidden power or secret. Maybe the slaves have some unique ability related to mana that the MC needs. It might also be a decision driven by external circumstances or threats that force the MC's hand.
There are some new characters and plot developments. But you'll have to read it to discover the specifics!
You might try looking on some dedicated comic scan websites, but be careful as many of them might be illegal and could get you in trouble.
Maybe Veronica becomes a vampire in some alternate storyline of Archie Comics. Or it could be that a vampire shows up and interacts with Veronica and the other characters.
It's a rather inappropriate and unusual combination. Manga hentai often explores adult and sometimes uncomfortable themes that don't align with the typical portrayal of Robin and Chopper in the mainstream manga.
The hilarious adventures, witty dialogues, and unique characters make them funny. The comic's humor often comes from the unexpected situations the duo find themselves in.
It's a bit complex. Sometimes the adaptations stay very close to the manga, but there can also be some creative changes.
There's no direct connection. Foghorn Leghorn is a Looney Tunes character and Enter the Dragon is a martial arts film. Their combination in a comic would likely be a very creative and unexpected crossover.
One of the top villains in Avengers comics is Ultron. His intelligence and determination to destroy humanity make him a formidable foe.
I think 'Your Lie in April' is quite similar. Both have touching emotional arcs and beautiful art styles.