Hai Kouen no Homeless Seijo

One day, 15-year-old saint Alm decides she can no longer stand her boss's power harassment and runs out of the temple. She buys land in an abandoned park, builds a barrier around a bench, and begins a homeless life where she can sleep freely, create food using her holy power, and enjoy the comfortable slow life in the park. On the other hand, the temple - which has lost their saint and is no longer able to function - is in a frenzy!
https://mechacomic.jp/books/239776