The only problem here was that Ibro was passive and not actively attacking it. Ibro was depleting this fiend energy in a similar way to what his bomb did.
Ibro's bomb took 10 days to awaken this fiend, how long would Ibro need then to completely kill this fiend? Ibro decided to use his strikes then.
His strikes, although coming from the system, didn't need the system help at all to be used. They had only the three conditions of their own: the stance, the move, and the strike.
Ibro took the stance of his word whirlpool strike and started his move. Inside his body, a huge amount of SPR energy began to form. Ibro guided the energy, as usual, to head straight into his mind.
There, it was mixed with his soul sea energy to form his ultimatum energy. Once his ultimatum energy was formed, it began to change the construction of all of his three spells.