Mushoku Tensei jobless reincarnation 3

Hello everyone I just picked up the 3 volume of "Mushoku Tensei," and I'm left with a question. Spoilers ahead you have been warned. I do not remember seeing a sphere in the sky in the last volume, I may have missed it when reading but sadly I can not check since I'm not home right now to look it up. So anyone who has read the 3 volume like me feel free to post a comment to correct me. So this volume has 2 birthday parties one we all knew about Eris's 10th birthday and surprisingly Rudy's 10th birthday was only sometime away. So what did Rudy get for his birthday presents, you'll have to read and find out since on gift will take another 5 years to get.
We also discover that their are many different languages in this world and our hero Rudy has learn 4 of them already. Which is impressive by himself wondering if their are more or what.
Time skips They are an interesting writing towel to help speed up the story. This manga has had a few but nothing like "Fairy Tales," and I would like to talk about it for a moment now. In "Mushoku Tensei," time skips are used to show passage of time and the characters growth in new skills. So as a writer time skips can be important to help the story grow but can also hurt it. If you don't have the characters explore the world after the time skip or talk about knowledge they gain then the time skip is useless. Thankfully I have not experienced this so far but who know when a write might use it wrong. Thanks for reading the post and see you all on the next one.