Two Worlds, Starting with Kaguya of Penglai Mountain

Kurokawa Kazuya, traveling through the everyday world, has been working hard to become an excellent game producer since he was a child.
Just when the first game that took several years to produce was almost completed, he traveled through time again, and all his past efforts came to nothing.
My heart was broken, and the phone in my pocket suddenly rang.
Guitar Hero
Kaguya Horaisan: "You seem to be holding something very interesting."
The beautiful princess who suddenly appeared stared at the phone and spoke.
……
Yana meets Kyouna, who travels back to the Edo period and awakens her "dream manifestation", and is confusedly thinking about what she should do.
I ran into my childhood sweetheart Kurokawa Kazuya by chance, and saw the cell phone in his hand with full signal.
The first time I traveled through time with my secret crush.
This is the first time I know I can contact my parents after traveling through time.
These two things combined should be a very happy thing.
but--
Why is this so?
……
It's probably a story about farming in a different world with beautiful girls.
……
The style of this book: daily writing, farming writing, and farming in another world are mainly based on cultural invasion.
Worlds involved: Touhou Fantasy Village (Secondary Setting), Lonely Rock (Four Characters), Loser Heroine (Jiashu + Laoba + Chaoyun)