I'm not sure specifically as there could be many interpretations. It might be a fan - made story that involves a character named Leonardo watching something related to a white object or person. Without more context, it's hard to say exactly.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. They usually have a wide variety of fanfictions, including genderbend ones for 'leonardo watch'. Just use the search function on those sites and type in relevant keywords.
Perhaps a plot where the gender - bent Leonardo is the only female in a group of male characters, and there are some romantic sub - plots that develop because of this dynamic. For example, she might have a love - hate relationship with one of the male characters which adds an interesting layer to the story. Another idea could be that she discovers a new power or ability that is related to her being female, which was not present in the original male Leonardo's story.
Possible themes could include transformation. Maybe the 'x' related to white is something that has the power to transform Leonardo or his surroundings. It could also be a theme of isolation if Leonardo is the only one observing this 'x' and white element, and no one else in the story understands or is aware of it. Additionally, a theme of beauty might be present if the white in the fanfiction represents something aesthetically pleasing that Leonardo is drawn to watch.
To write a compelling Leonardo in fanfiction, first focus on his existing traits. He's brave, so show him facing his fears head - on in new and unexpected situations. For example, if he has a fear of heights, put him in a situation where he has to climb a tall building to save someone. Also, explore his relationships. Maybe he has a falling - out with a close friend and has to work hard to mend it, which shows his loyalty and determination.
The movie claims to be rooted in truth, but as with many such accounts, it's likely a blend of facts and artistic license to make for a compelling narrative.
There are 15 films starred by Leonardo DiCaprio:
Titanic (2010)
Inception (2010)
Wolf Totem (2014)
4. The Reaper (2015)
5 The Reaper (2015)
The Wolf of Wall Street (2013)
The Great Gatsby (2014)
Once Upon a Time in America (2011)
A Clockwork Orange (1971)
True Lies (The Prestige, 2010)
Inception (2010)
12 The Reaper (2015)
Wolf Totem (2014)
Captain America: The First Avenger (2011)
15 The Reaper (2015)