Considering everything, since this would be a boxing match, it's definitely in Pacquiao's territory. With the right training for sure, he can get back into the shape that could dominate. Not in the time in his prime but still, it could work. This is probably a propeller for Suzuki to get his name out there. Win or lose, it's an exhibition match.
Even though it's been a long time since his last match and he's focused on the senate in the country, he's still training and working out, it's been reported that he's retiring from the boxing game but someone has offered him a match so maybe not yet he totally retired, maybe others are taking advantage of his age, we know that Manny Pacquiao is not that young anymore but he has proven a lot, he has a big chance to win that fight especially if he really focuses on training and will get better even in the match itself.
Compared to Pacquaio's contemporaries in boxing like Eric Morales, Hatton, Barrera, and Bradley he is in tip-top shape and never stops training,
Pacquaio has never been so dominated that people will call out for him to retire like what happened to Wilder, he may not have the same power that he used to possess in his great years but he still can hurt, can still counter, and can still last the whole 12 rounds.
The fight is a very short distance only 3 rounds but Pacquiao can still hurt Chihiro and he needs to look good on this fight because he wants the Mayweather fight to happen.