Hearts will host their sworn rivals at the Accra Sports Stadium on Sunday in match-day 8 of the Ghana Premier League.
The Rainbow Club are expected to make amends by defeating Kotoko in the much-anticipated game on Sunday after a disappointing performance against Tema Youth.
Otoo has called on the fans to throw their weight behind the team ahead of the game.
“We know they were disappointed we lost to Tema Youth, but that is football,” he said.
“We just want to plead with them to still support the team, they should pray and give us all the support and we will surely deliver.
“We have a big game with Kotoko on Sunday, so we are counting on their support.”
Hearts are ninth on the League table with 9 point from seven matches.