Neko-Sama sent a Clay Clone to travel to a dropsite for Raijin, and near there would do what a crow does until Raijin appeared where it would deposit a message that was hidden inside it before dissolving.
Raijin-Kun,
Forgive the strange manner of which I contacted you. I thought it less likely to be intercepted if all anyone ever saw was a crow doing natural crow behavior until you arrived, there are a few things I will need from you. If you are able to.
1) I'm sure after hearing how Akihiro wronged Shimiko how there is a likely chance of retaliation on Konoha. While this does play perfectly into part 2 of the letter. If this is the case, send warning to get my nation prepared while I'm at the Chuunin Exams. I'll detail the chain of command and needed people there whom you are only known as "A Security Specialist and Analyst for Miryoku Resort."
1b) If not. Then I need you to plan an "attack" in Konoha for which to pin on the Society but do so without ciivilian losses. If you collect recent dead and seal them until you get to your destination, "Bodies" will be found in the aftermath.
2) I need you to repeat 1b in Kumo. Now they are cherished allies, and I do not wish harm to be brought upon them. But a flashy, terrorist attack not long after Menza gave his orders will allow will paint the Society as terrorists using fear tactics to get their way. And most likely seen as "A warning if they don't comply."
I doubt you'll fail to see how this will turn the world against Menza, and how he'll never be able to rest once Konoha, Kumo, and Kiri are attacked by the Society not long after the message was given.
Try striking Konoha first. Since Rin and Yui are from Konoha and angered him. It will seem as a vengeance strike, hitting Kumo where she's being kept for now will further ingrain Menza as the hand behind the attacks. With Kiri last, where the Otsu was threatened and his hand stayed. Will be only making those three attacks go "full circle.".
Now Kiri can lose people, try to leave the current Kage alive. It will add in a bit of vengeance towards the society, and will further put all the blame on Menza.
The greater the loss of life, the better. Nothing brings people together more than hate.
3) I've spent all of my long cat life among your species, and while I've done so I've worked with Ijutsu and the goal towards shapeshifting. I'm planning on giving Menza what he asked for Yui Kotoshura, but I am planning on being that Yui Kotoshura. A flawless copy of my human.
I know I will be asking more than the million ryo you've asked for. But if you can. If you can not aid in my and the Otsu's escape. Then watch after my human, and her mate. Be there for them in ways I will no longer be able to.
Be well, and be safe Raijin-Kun, and know that Miryoku Resort's doors are always open to you. If you ever need a safe place, I will make an official letter to Konoha, that will ensure you will always have one safe place to call home. For however long you stay.
Thankfully,