Did Piccolo train with King Kai in the manga?

Yes. Orange Piccolo is present in the manga. The character brings some new dynamics and developments to the plot.

Yes, Piccolo does blow up the moon in the manga.

You can start by understanding the demon king's personality and powers. Then, create a training plan based on those. Also, look for weaknesses to focus on improving.

At present, there was no conclusive evidence that Wang Kai and Tan Songyun's relationship in real life was beyond the scope of professional partners and friends. Although their performances in plays and interactions in life showed good work ethics and friendship, they did not publicly disclose the latest news about their relationship. When Tan Songyun answered the question about whether it was possible for her to be with Wang Kai, she said," It depends on fate." This reflected her views on relationships and her respect for possible relationships in the future. Therefore, there was no clear answer to the question of whether Wang Kai and Tan Songyun had a special relationship in real life.

Well, Bullet Train isn't a manga. It could be a novel adaptation or a completely original concept for a movie or something else. But in the realm of manga, it doesn't exist.

Well, in the 'king piccolo meets his son' fanfiction, it could be that the son has some sort of special ability that King Piccolo wants to use for his own evil purposes. However, the son resists. There could also be a sub - plot where other characters from the original story get involved. For example, some of the good guys might try to protect the son from King Piccolo's clutches. And in the end, the son might either change his father for the better or have to defeat him to save the world.

The Mugen Train is not present in the manga. It's an anime-exclusive story that expands the universe but wasn't part of the original manga content.

In the end of the Shaman King manga, there were some unexpected twists and turns. The final battle had intense moments and the conclusion tied up loose ends for many characters.

Yes, Asta does become the Wizard King in the manga.

The relationship could start off very rocky. King Piccolo is used to being in control and his son might be more independent - minded. But over time, they could develop a grudging respect for each other. For instance, if the son shows great strength in combat, King Piccolo might start to see him as an equal.