Japan won five medals on Wednesday at the Rio 2016 Paralympics, with three silver and two bronze added to its tally, but the search for gold continues with just four days of competition remaining.

Swimmer Keiichi Kimura confirmed himself as Japan's star of the 2016 Paralympics, winning his third medal of the Games and second silver when he finished second in the men's S11 100-meter butterfly, 0.19 seconds behind Spanish winner Israel Oliver.

"I was counting on the gold, it was really unfortunate. It was really disappointing. Maybe I'll regret this until I die," said Kimura, a 26-year-old who suffers from a visual impairment.