Should I pull for Ryuiichi?

In my opinion, if you have Kunio, you should definitely pull for him. The small movement speed UP slot is very valuable, and it comes with a small money UP slot as a bonus, making him a truly strong character. The fact that you can get him for 1500 Cat Food is also insane. Last year there was no Kunio-kun collaboration, so there's no guarantee it will come next year, and there's a possibility that Riki or other characters might take up slots, so if you're going to pull, now is the time.