In general, Hajime no Ippo Rising doesn't fully align with the manga. Some storylines and developments in the manga haven't made it into the anime. This could be due to various factors like production constraints or creative decisions.
The Dark Summoner Stained Red Cloud was a character in a fictional world. Her awakening time was not clearly stated. In the novel, she was usually a character with superpowers who could control the dark forces and provide help to humans during the apocalypse. However, because her existence is usually closely related to the doomsday plot, her awakening time may be speculated and imagined by readers.
Definitely! The Hajime no Ippo manga has a compelling plot with lots of exciting boxing matches and emotional character arcs. The way it portrays the sport and the growth of the main character makes it really enjoyable.
Ippo's age in the manga changes as the plot progresses. At the beginning, he's around 16 or 17 years old. As the story continues, he gets older with each new arc.