The light novel can contain more content overall. Some side stories or character backstories that are only briefly hinted at in the anime are fully fleshed out in the light novel. Also, the visual aspect of the anime means that sometimes certain interpretations are made that might be different from what readers might imagine while reading the light novel.
Well, the anime often has more visual and auditory impact. It can bring the story to life with cool animations and voice - acting. However, the light novel usually goes into more depth in terms of character thoughts and some detailed plot developments that might be skipped or simplified in the anime. For example, in the light novel, there could be more in - depth exploration of the main character's inner struggle about his new life as a devil, which might be just briefly shown in the anime.
Issei Hyoudou is the central character in Highschool DxD. He's a typical horny high schooler at first, but his character evolves throughout the story. Rias Gremory is a significant character as she's the one who gives Issei a new life as a devil. Then there's Akeno Himejima, who has a complex personality and is quite powerful. Koneko Toujou is also important; she has her own backstory and plays an important role in Issei's journey. There are also other characters like Xenovia and Irina who contribute to the story in different ways.
One major difference is the pacing. The anime 'Highschool DxD Born' has to fit the story into a set number of episodes, so it might speed through some parts. The light novel can take its time. For instance, in the novel, a battle might be described over several chapters with detailed tactics, while in the anime it could be over in a few minutes.
The art style is a major difference. In the manga, you get to see the characters and scenes visually depicted in a more immediate way compared to the light novel. The light novel often has more detailed descriptions of the inner thoughts of characters, like Issei's pervy thoughts which are sometimes more in - depth in the written form.
The anime simplifies some storylines from the manga. But the core characters and main plot points remain similar.
It's hard to say which is more popular in an absolute sense. The anime has a wider reach in terms of visual media consumers. It can attract those who are more into watching shows rather than reading. However, the light novel has a dedicated fan base among readers who prefer the in - depth exploration of the story that only written works can offer.
The 'Highschool DxD' light novel and its anime adaptation follow the story of Issei Hyoudou. He is a perverted high school student who gets killed on his first date. However, he is reincarnated as a devil by Rias Gremory. From there, he gets involved in the complex world of devils, angels, and fallen angels. He has to fight battles, make alliances, and also deal with his newfound powers and the harem of girls around him.
In addition to Issei and Rias, Akeno Himejima is likely to be a main character in this volume too. She is one of Rias's peerage members and has a special relationship with Issei. And there are other characters like Koneko Toujou who play significant roles in the overall story arc of the series and would probably be important in volume 25 as well.
In the 'Highschool DxD Light Novel', Issei Hyodo is the protagonist whose transformation into a devil sets the story in motion. Rias Gremory, with her alluring and powerful presence, is crucial. Akeno Himejima, who has a complex personality and a special relationship with Rias, is important. Koneko Toujou, a cute yet strong devil, and Asia Argento, a kind - hearted girl with a special power, are also among the main characters. Each character brings their own unique traits and backstories to the overall narrative of the novel.