Wizard: You can become stronger by living life to the fullest.

Rosie travels to the wizarding world and becomes an apprentice who has just been fortunate enough to have his wizarding potential identified, and sails across the ocean to the wizarding world.
Even more fortunately, his time-traveling journey also comes with a cheat code: he can become stronger as long as he works hard.
[Take one deep breath; time added 1 day.]
[Strive to complete one reading session, time added 2 days.]
[Trying to complete one bowel movement, time added 3 days.]
Accumulated time can be used for many things.
You start diligently reading "The Wizarding World Geography Guide," focusing so intently that you forget to eat or sleep.
Seven days have passed, and you now have a better understanding of the geography of the wizarding world.
[An Introduction to the Geography of the Wizarding World.]
then.
Start living life to the fullest today, and strive to become stronger every day.
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A wizarding story, set in the White Wizard faction, with sound moral values.
The main character has a good personality and is well-liked.
Genius style.
New author, new book, please add to your favorites and recommend!