Although the holidays are over, it's beginning to look a lot like Christmas at several Japanese orphanages.
    
From backpacks to envelopes of money to green onions and bags of rice, gifts have been arriving at more than 100 child welfare centers across Japan. 

It has remained a mystery, however, exactly who is sending the gifts. The sender has only identified himself as "Naoto Date," the name of a superhero in the 1960s Japanese comic "Tiger Mask."
    
The comic features an orphan who grows up to be a popular tiger mask-wearing wrestler in the United States and gives much needed gifts to his orphanage.  

Welfare center director Kikuchi Masatoshi said he received the first surprise gift on Christmas Day. 

Soon, news of the "real-life" hero sparked a national gift-giving movement.  More than three dozen facilities have reported receiving gifts in one week.

One store manager found $1,200 with a note which read, "(There are) Tiger Masks across Japan. Please use this for our promising children."

The person behind the mask hasn't come forward, but several sightings of the anonymous super hero have been reported.

One store owner said an older man with a scarf covering his face recently purchased half a dozen backpacks for an orphanage - and he's pretty sure it was the Tiger Mask.