Yes, there are many fanfics that focus on the positive relationships and adventures in the Boruto universe involving Tsunade in a non - sexual way. You can find them on various fanfic platforms by using appropriate filters.
One theme could be Tsunade mentoring Boruto in medical ninjutsu. Since she is known for her skills in that area, it would be interesting to see her pass on her knowledge to the new generation.
After Kurama's death, Naruto faced new challenges. His chakra reserves were reduced, but he continued to guide and inspire the younger generation of ninjas. He also had to adapt his fighting strategies without Kurama's immense power.
No, Boruto is alive in the manga. The plot hasn't led to his death. However, the manga is ongoing, and anything could happen in the later developments.
Yes, Boruto is indeed a manga. It expands on the Naruto universe and offers fresh perspectives and storylines. Many fans enjoy reading it to delve deeper into the world created by the series.
As of now, no. In the Boruto series, their relationship is mainly focused on their friendship and comradeship as ninja. There are some moments that fans might interpret as having a hint of something more, but the story has not made their relationship a romantic one in an official capacity.