The cat who tried to save my son's life

This video is on my son, RYUTO, who passed away 2 years ago &a black tabby cat, RIKIYA, who had been very close to RYUTO since he was born. Thanks to RIKIYA, RYUTO became a serious animal lover & gained a lot of knowledge on animals.
I do believe that RIKIYA died for RYUTO.
Even though that was not enough to save RYUTO'S life.......
Here's the video I uploaded in 2013, on RIKIYA afterward