A Black Marubuzo (open is the high of the day and the close is the low of the day) day is followed by a White Marubuzo (open is the low of the day and the close is the high of the day) day that gaps in the opposite direction.
The current trend is not very important with a bullish Kicking pattern. The fact that the stock can gap up and rally to close at its high is bullish regardless of the previous trend. Use volume on the white day to confirm the movement.
The bullish Kicking is similar to the bullish Separating Lines.