The volume of Mushoku Tensei manga can vary depending on where you look. Sometimes new volumes are released, so it's best to search on reliable manga platforms or consult with fellow manga readers who follow it closely.
The detailed world - building. The author has created a vivid new world in Volume 1, with its own magic system, social structures, and races. All these elements make the story immersive. For example, the way magic is taught and practiced in this world, and how different races interact with each other.
The protagonist is surely an important character. His actions and decisions drive the story forward. There may also be his friends or allies who play crucial roles, like those who have been with him since the earlier volumes and continue to support or challenge him in this one.
One of the key points might be the character development of the protagonist. He likely faces new challenges and overcomes them, growing in strength and wisdom. Also, there could be new relationships formed or existing ones deepened.
Hard to say. It could be on hiatus, but without concrete information, it's difficult to give a definite answer. Try following the mangaka's social media or the manga's official website for the latest.