The story revolves around a spring, where the amount of flowers bloomind and fairies active is unnatural, with even non-spring flowers blooming. A heroine then proceeds to go to Muenzuka to seek the cause of this abnormal spring.
A human living at the boundary. She possesses the ability to fly in the air.
She's the kind of shrine maiden that's ever-so-carefree and doesn't think about anything. Whenever a disturbance occurs, she'd immediately rush to resolve it.
Nevertheless, she'd never manage to rid herself of all disturbances around her. Rather, it might be the case that she attracts disturbances to herself.
A human living in the Forest of Magic. She has the ability to use magic.
This disaster, which covered whole Gensokyo with flowers, didn't affect the forest. The forest doesn't need a pretty plant like that, after all. That had little effect on her, however, as she enjoys these flowers outside of the forest.
A maid who serves a devil. She's a human who lives in the Scarlet Devil Mansion. She possess the ability to the extent of manipulating time.
Though her character is refined, sometimes she acts like she's being careless or just spacing out. She doesn't think the flower incident is anything terribly dangerous.
Miss half-human half-phantom. A gardener of Hakugyokurou in the Netherworld. She possesses the ability to handle sword techniques.
Originally, she's a swordsmanship teacher of her mistress. Knowing that the flowers were in full bloom in Gensokyo, she came to see the scenery. Though she saw lots of phantoms hiding behind the flowers, she pretended not to see them.
A rabbit from the moon. In her red eyes dwell far greater power of insanity than the rabbits of the earth.
Flowers are blooming all over Gensokyo so the rabbits of Eientei went into an uproar. This couldn't be left uninvestigated, so she went out to investigate. While she's at it, since Tewi disappeared, she's also going to bring her back if she can.
An ice fairy who usually stays at the lake, which is like her headquarters.
She's basically just a fairy, so she's an idiot who loves pranks.
Since the flowers are blooming so much, lots of people are coming to the lake; this leads to the fairies being even more troublesome than usual, so she decided to join them and be a bother as well.
The third daughter of the Prismriver Sisters, who are always busy going to and fro to perform in concerts.
Specializing in keyboards, she uses illusionary sounds lost from this world. She didn't think much of the "flower incident"; all she saw was Gensokyo in a hubbub, so she went out to collect sound material without telling her sisters.
The second daughter of the Prismriver Sisters, who are always busy going to and fro to perform in concerts.
Specializing in brass instruments, she uses sounds that can uplift the soul. She has absolutely no interest in the flower incident.
The oldest daughter of the Prismriver Sisters, who are always busy going to and fro to perform in concerts.
Specializing in stringed instruments, she uses sounds that depress the spirit. She has nothing to do whatsoever with the "flower incident".
A troublesome youkai who doesn't do much else other than singing. People will start going mad if they hear her song.
She loves festivals and events with lots of noise and action the most. Gensokyo, which is caught up in the "flower incident" is like a playground for her.
A youkai-powered rabbit who cared about her health and lived long.
In Eientei, she's a leader of plenty of earthborn rabbits.
This time, she went outside to have fun with the rabbits that is so excited with unnatural scenery without telling the members of Eientei.
A tengu who has been in Gensokyo for over 1000 years. She has the ability to manipulate wind.
She is honest but not rigid. She writes up her non-periodical newspaper, Bunbunmaru Newspaper, and distributes it among the tengu. It's a newspaper chock-full of rumors. As the current disaster started up, the tengu were overjoyed.
There was much new material to be obtained, based on which they can write up their newspapers.
A doll thrown away into a lily-of-the-valley field; over the long years she became a youkai. She possesses ability to manipulate poison.
The suzuran, which weren't expected to bloom, have begun blooming all at once this year. In addition to that, even autumn flowers which weren't supposed to bloom are blooming too. She learned that there are many powers she has never seen in Gensokyo.
A youkai that lives in Gensokyo. She has the ability to manipulate flowers.
This time, as she witnessed Gensokyo being overtaken by flowers, she wasn't surprised at all and very well understood the situation. Although she understood it, she thought that it'd be paradise if it was always this way.
The outbreak must eventually be resolved. She decided that she would enjoy this outbreak while she can. It'd be a waste to not enjoy this once-every-sixty-years outbreak. Without a destination in mind, she enjoyed the flowers as she slept and awoke, as her pattern continued.
A youkai that provides passage for the river between Gensokyo and Higan. She has the ability to manipulate distance.
The reason Gensokyo got buried under a sea of flowers this time was because her workload went way beyond what she could handle.
There were so many dead spirits that some of them were not handled in time and were left in Gensokyo, and in this puzzled state these dead spirits possessed nearby flowers.
Komachi thought that it was just a temporary issue, and worked at her own pace without the slightest bit of worry. However, it soon caught the eye of her boss, Eiki, and she got a good scolding because of that.
One of the gods that resides in hell and judges the deceased. She possesses ability to establish things as clear good and evil.
All these flowers were possessed by spirits of the deceased, and the reason they weren't processed properly was because Komachi was being lazy.
Komachi, being too easygoing, only thought "ah, it's beautiful" even when the flowers were filling the whole place. It's not like she can restore the flower-covered Gensokyo, but time will eventually bring it back to normal. There was little to no harm.
However, a human who's been charged with a crime is before her. With her pride, she couldn't let her pass through her place.