New Delhi, Sept. 18 -- Demon Slayer Infinity Castle Box Office Collection Day 6: The Japanese anime film Demon Slayer: Infinity Castle has maintained steady momentum in Indian theatres. Released on September 12, the dark fantasy action title has collected Rs.51.20 crore net in six days.

The film saw strong growth over its first five days, bringing in about Rs.47.70 crore. The performance is notable as very few recent Hindi or Hollywood releases have managed to achieve similar numbers at the box office.

According to Sacnilk estimates, the film earned Rs.3.50 crore on its sixth day, marking its lowest single-day earnings since release and a slight decline from day 5 collections of Rs.4 crore.

The opening Friday registered the highest fig...