Ask him? Why should he retweet if he does not support it?
But well you seem so stubborn that this is a scam that I cannot help you with this. You don't have to buy the presale. I hope the direct listing on CE this week will make you more confident that they really want to do something great. If not than it shall be so. I for myself have faith that the project will do very good.
A retweet does not mean he supports it, also I have no real interest to ask him, its your job to do that to back your bold claim that he made a tweet when he did not. It would of course be great if he came on here to say he supports APR and he stakes APR on his laptop whilst he is busy working

You have indeed made a huge thing of this retweet from Shin Koyamada, you have put it on reddit, twitter, bitcointalk and facebook, it really is your claim to fame, but it was only a retweet!
Further more, I have at no point said your coin is a scam.
Can you please give more details on your claim that you will list APR on
Bittrex and Upbit? Have you any dates when APR will be listed on these exchanges? Have you submitted APR to these two exchanges already?
On your discord channel you say this:
"APR KING - Sales - 04/23/2018
Hello @everyone ,
I'm glad you all enjoyed our first celebrity endorsement! Amazing positive feedback, as we have many more connections to other celebrities to be announced in the future. We will and plan to take APR mainstream, and possible product placement in future films based in Hollywood. So expect more Celebrity endorsements, Radio ads, TV spots, and other various streams of advertising via our whitepaper"
Again Shin Koyamada did not endorse APR coin, can you please confirm he endorsed APR coin by simply retweeting your tweet?
Can you please give further information on your claim that APR coin has many more connections to other celebrities?
You also claim APR will have placement in future films based in Hollywood? Please give information on this?