Main Character

" WARNING !!! This page contains SPOILERS ; read at your own risk."

The Main Character (MC) is one of the human exchange students attending RAD. Their default name is Yuki, however, the player can change this name alongside their birth-date at the start of the game.

Personality
MC's personality is determined by the responses and actions they make during the Lesson or Event stories and texts and calls.

However, due to the machinations of the game, MC is often considered nosy due to their tendency to get into matters that, at face value, appears to have nothing to do with them. This trait is often viewed as a detriment by other characters. Mammon once lamented, during Lesson 16-A, that MC "may seem like someone who's really got it together", but has a "boneheaded streak", and that they can be "weak, and super reckless... and too damn gutsy". The recklessness is later confirmed that they choose to head toward danger than away from it.

In Lesson 4-15, Lucifer has commented that they "seem to be the type of person that has trouble lying".

In Lesson 41-16 (Hard), The brothers compare MC to the lead character in a horror movie as they place the safety of others above their own (regardless of the consequences), spend a lot of energy trying to fix their friends' problems, and very kind and sweet.

In the Devilgram story "Three Wishes", MC is shown to be very selfless for their wishes was to give the brothers an extravagant dinner to thank them and free Belphegor from the lamp, thus forfeiting their third wish.

Despite being surrounded by demons, they appear to be afraid of ghosts as when Satan spoke of the history of the House of Lamentation.

They have a tendency to be too overzealous when they enforce the pacts on the brothers.

According Simeon, their greatest strength is being flexible and able to adapt to almost any situation.

Story
MC's background remains unknown and was picked randomly by Lucifer to be in the exchange program at RAD. Apparently they had no knowledge of being chosen for they were confused at appearing suddenly at the student council hall. However, it could be very possible that Barbatos influenced in some way the choice due to his ability to foresee the future and the different versions of the timeline.

Lilith
Initially portrayed as the disembodied voice MC occasionally hears, Lilith is later revealed to be their distant ancestor. She also reveals that she specifically chose MC to influence and encourage in order to fix the familial problems of the demon brothers -- in particular, the rift between Belphegor and Lucifer, and also brought their photo to Lucifer's attention making him choose them for the exchange program.

Trivia

 * This is the first Shall We Date games where the MC isn't exclusively female. Depending on the player, MC may be male or female and are identified as "they".
 * Although the physical appearance completely depends on the player, the demon bros has noted that they are kind of cute and hard not to like.
 * Asmodeus does provide a few features of MC such as their middle fingers being longer than their forefingers, and their ears being on the small side.
 * In the TSL fandom, the human protagonist Henry is based on MC.
 * MC's icon is a sheep.
 * The sheep often symbolizes humans in the Bible as followers of God, and were considered pure and innocent.
 * In Leviathan-Sensei's Otaku FM, Asmodeus gives MC the nickname Sheep-chan.
 * MC has so far twice developed kemonomini traits. The first was in We're All Bad Here where they developed bunny ears after consuming something, and the second was where MC has choice of being a dog or rabbit as a game avatar in the Devilgram Animal Game.
 * They and Leviathan are the only ones who don't use their personal photo. MC cannot have one because the developers wanted MC to be based on their players. They and Lucifer also use their personal names instead of a username. Again, MC doesn't have that option because the developers wanted MC to be based on the players.
 * Despite Lilith being their ancestor, MC isn't related to the brothers as Lilith was reincarnated as a human.
 * In a text message, Beelzebub will ask MC if they have any brothers, which the player can reply yes or no.
 * If answering yes, MC has likely more than one brother.
 * In the first draft, MC was originally going to be in high school employed to babysit the seven brothers (under the guise of humans) at the House of Lamentation in the human world (which would be set in the English countryside) and wouldn't discover their true identities until the second half of the story.
 * At the time, they were also written in mind as a girl.
 * Also, MC would have a mother who's an artist and one of her art pieces was in Diavolo's possession.
 * In Lesson 41,
 * In Lesson 41,