Satori's Adventures in the Angelic Dreams

Satori's Adventures in the Angelic Dreams (東方天使絆 Tōhō Tenshiban, lit. "Eastern Angel Bond") is a freeware-only Touhou fangame series created by CaraPrincess, which is a fork of the currently-abandoned Claire: Chronicles of the Carmine Blood series, while still retaining some elements such as characters and setting from the project.

Origins
Initially, CaraPrincess was developing the ideas for Claire: Chronicles of the Carmine Blood when she first discovered Touhou. She got up with that idea very well, until one day, she listened to the song Satori Maiden, and it got stuck in her head. After that she thought "why controlling an awfully powerful character that can easily defeat any enemy while that most RPG player characters are weaker than that?" and "how about adding Satori as a playable character in a Touhou fangame?". Then the idea of this fangame series is concieved.

She also got the idea of Satori being controlled by one of the Angels in the Angelic Triad, who initially came from CCoCB, from Touhou games such as Wily Beast and Weakest Creature (where a Beast spirit controlled the main character), and Antinomy of Common Flowers (where a character ended up possessing another character during the Perfect Possession incident). This also came from the idea of guardian angels, according to CaraPrincess, judging by the ability of Satori to summon either Megumi / Yoshika / Ritsuko (determined by an RNG, with the same mechanic as the Metronome move) to use an attack that could deal a massive amount of damage to the enemy when her HP is very low, which can be interpreted as Satori's guardian angel (s) is trying to protect her from being knocked out when her HP is low by attacking the enemy with brute force.

A move from the character selection of her old project, she intended to have Satori as the sole playable character of the series after noticing that some high-profile video game series, such as DOOM, The Legend of Zelda, and the Undertale series (which includes Undertale and Deltarune) features a sole playable protagonist. CaraPrincess then shaped the idea of the sole playable protagonist after the concept of the protagonist in DOOM, which the player character is supposed to be YOU (the player). While that unlike Undertale 's protagonist Frisk, Satori has visible dialogues in-game, but CaraPrincess has reduced her dialogues to a minimum, so that the players still immerse their personality into Satori for most of the game, but still keeping her true personality intact at certain points in the games. However, with the introduction of Junko Okazaki, a character set to be the second playable character starting from the second game of the series, she decided to make the option of Satori and Junko being both playable starting from the second game.