Balance Sheets (Parentheticals) - $ / shares |
Apr. 30, 2019 |
Jul. 31, 2018 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Preferred stock, shares authorized | 50,000,000 | 50,000,000 |
| Preferred stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
| Preferred stock, shares issued | 0 | 0 |
| Preferred stock, shares outstanding | 0 | 0 |
| Common stock, shares authorized | 150,000,000 | 150,000,000 |
| Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
| Common stock, shares issued | 17,990,000 | 17,990,000 |
| Common stock, shares outstanding | 17,990,000 | 17,990,000 |