The protagonist travels to the era of Sword and Sword III, and a few characters are involved in Sword and Sword IV. After all, the era of Fairy Sword Four is before Fairy Three, so there are a few that can be connected. The characters of Sword and Sword III in this work follow the game as much as possible. The Sedum in TV is too cunning, but maybe this is a selling point, TV needs such a character.
The most important thing is that this article is from GL, so I don't like to read it by mistake.