In Happy's previous life, Silver Wolf had been one of the regrets Happy had in his training to become a powerful player. However, in his new life, he was no longer as passionate about fighting against various great players. The betrayal of his love, the destruction of his three years of hard work, and the baffling persecution made him form another goal a few months ago.
He did not wish to interfere with other people's lives too much.
To him, this was the responsible act. Hence, even though he ran into Silver Wolf, he squashed down his desire to fight him and did not challenge him.
Besides, it was not a good time right then.