The "danger" gacha / mobages poses to Touhou is grossly overstated tbh.

An interesting point to mention is that on the latest Nikenmei (ZUN's podcast where he drinks and chats with his friends), ZUN said the following (paraphrased by a Chinese community member I follow, so note that this has been through two layers of translation):

Touhou Cannonball was like a litmus test for officially-licensed Touhou mobile games. It got really big, then shattered.

Myon:

> Follow Aya out.

Youmu:

> "I mean the details. There was something to it that I couldn't quite discern. But I guess it can wait for another few seconds."
> Draw our better ribbon-slicin' sword and measure the up the intrusive ribbon on the cat.

Broooooo, if you are into writing, this will be a good premise for a Sci-Fi story, lol.

I used to be into writing, actually, but not so much anymore. I'm at my creative low point. This dream would make for a nice intro, but tne main portion of the story would, of course, be the new planet and I have no idea how would it look loke. My mind's blank.

> I guess we'll have to actually climb the stairs.
> Head over to the stairs and begin our ascent and keep an eye on Yuyuko.

// Saigyouji can probably tell more about Tenshi then she knows about herself (or is willing to admit to herself)
> Nod and follow Youmu, glancing back to see if miss Saigyouji will follow along.
> Would now be a good time to let our friends know we'll be out helping Youmu?  If so step over to where they're waiting and explain.

>Yes, this would be a good time to tell your friends about your impromptu errands.
>You go over to Shion and Shinmyoumaru while they're having a conversation.
>"...And there was a Dream version of Tenshi?"
>"Yes, she was probably the most terrifying to see and listen to. But... the experience really allowed me see into the hearts of others."
>"Oh hey, the real one is right there!"
>You tell Shion and Shinmyoumaru about the gardening you are soon going to do.
>Shinmyoumaru raises her brow in confusion. "Gardening? Didn't expect that, but we'll keep watch on the bottom of these stairs then. If any threats are coming after you they most likely have to go up the stairs."
>"It's also because she doesn't want to climb the stairs."
>"Shion! Shush!"

>You then leave and start your ascent of the staircase with Youmu. You really hope this will at least feel shorter than it is.
>You look behind you and see Yuyuko also following behind you both.

//We'll have to try to find a way to let Yuyuko tell us some information. Maybe a few bottles of alcohol might help our case but I'm not sure if Yuyuko, a ghost, can even get drunk.
> How good are we at drinking?

>You're pretty good at resisting drunkeness, that's for sure. When you were still Chiko (you don't like recalling these memories) you were often given alcohol, but only as a medicinal tonic and not for recreation. When you became Tenshi though, you quickly gained a rebellious streak and whenever you're invited to a party (this is extremely rare, unfortunately) you can outdrink several Youkai. You haven't tried against an Oni yet, Suika might be up for a challenge...
>Though you're unsure if your currently slightly weakened state might effect your usual resilience.
>_?