If you like Japan and talking to random people this is something you may want to do.
Pros: self training for future stressful situation, meet new people, enjoy smallest joy in life, eat japanese food.
Cons: it is a business not education.
A typical day starts around noon, and ends around 9 or little later.
Work experience differs based on the assigned school. Most of the co-workers are mainly either "really in love with Japan and it's culture" or "used to have the first statement but now depressed".
"Teaching" part is really easy, as long as you can follow the structure and be an entertainer. *Unless you have "one on one lessons" with a particular student, do not expect them to improve dramatically. Even with the lessons it is hit or miss.*
This job requires patients, a lot of patients.
It is like if you care about "teaching" you may suffer, if you can say this is not "education" it is a "business" you may survive.