![maple trees' flowers](https://image.jimcdn.com/app/cms/image/transf/none/path/s7a75c9dde64a0fa9/image/i0c7b7d80e105b578/version/1715343252/image.jpg)
These are maple trees' flowers.
I've seen them for the first time. Like boomerang.
NOUNAI Senri joins RUOWA, a large company in the sky, to cure his sister's incurable disease, but his body becomes weak after he takes RUOWA Metal, the company's drink.
Senri walks to the roof top of the office, but his body is so weak that he trips!