Bloody Love Maiden

Bloody Love Maiden (鮮血の恋乙女) is a game event that occurred in Mass for the Dead. It was released on February 12, 2020 to February 22, 2020. The event was re-released on February 4, 2021 to February 17, 2021.

Background
One day, Shalltear, who is thinking of Momonga, realizes something serious. It's ... the possibility of having a profound plan to decide on queen and testing her love. Yes, that's what is was--a Trial of Love. The maiden's secretly strategizes and begins to move in order to obtain the love of her beloved.

Incident
One day Shalltear Bloodfallen while patrolling the Crack at the Throne Room, daydreams about her and Momonga and being lovers. Her idealistic reality is interrupted by her two Vampire Brides who inform her that the Crack is about to undergo a Chaos Zone. Annoyed that she was brought away from a nice place, she dons her armor and readies for combat. After wiping out all the swarming Chaos Beasts, her subordinates praise their master on her job in wiping them out which Shalltear soaks in. She wonders aloud why Momonga has not accepted her love to the confusion of the vampires. Having a realization she excuses herself and locates the protagonist and Slimeko in Ashurbanipal. Making sure that Albedo is not present in the library, Shalltear demands to know what the protagonist thinks of the results on the Queen War. Since the final decision couldn't be made by Momonga as both Albedo and Shalltear tied in all competitions, the only one who can answer that is Momonga, but unfortunately he left the outcome inconclusive.

But Shalltear believes that the reason why Momonga did not choose either of them was because of their lack of power. She insists that it is a hidden test that their master has laid out. The protagonist thinking on this admits that an issue like this for the future of the Great Tomb of Nazarick is too important to be left unresolved. Thinking this to be a "Trial of Love" where Momonga is waiting for a woman to express genuine love. The protagonist finds a precedence in an anecdote, "The Three Visits", where Liu Bei succeeded in recruiting Zhuge Liang after paying three personal visits until at last Zhuge Liang accepts to join Liu Bei due to his patience. Thinking this leads to proof of such a trial the protagonist and Slimeko pledge to strategize a way to win Momonga's heart for Shalltear. To avoid complications with the other Floor Guardians, they develop a cover story to spend time outside of Nazarick to "teach" Shalltear tactical knowledge.

Now that both Momonga and Albedo are under the impression Shalltear wishes to go outside Nazarick to undergo training, the trio commit to themselves in helping Shalltear pass the Trial of Love. Later Momonga summons Shalltear to handle an outbreak of fly-type Chaos Beasts in the vicinity of Nazarick. Though the creatures are not that far from the dungeon, Momonga worries of them attacking human settlements, and may cause refugees to flood in the area which will allow Nazarick to be discovered. Shalltear accepts the mission and departs. Momonga noticing Shalltear's lacking lewd behavior when usually talks to him, asks Foire if there is anything strange with the Floor Guardian lately. The maid on duty cannot say but suggests maybe keeping her emotions in check for the mission and perhaps she is just taking her duties seriously.

Outside tomb, Shalltear prepares to get ready for her mission and is excited that now she can begin the first stage of her operation "Attracting the Attention of the Target". This mission given to her is the perfect way which her two comrades Slimeko and the protagonist agree. They are later joined by Narberal Gamma and Entoma Vasilissa Zeta who have come to support her during the mission to purge the Chaos Beasts. Shalltear however insists that they observe while she deals with the monsters. Surprised by her request the two maids consent to her order as it will be a good lesson to watch how Shalltear fights. The three women take to the air in the sky.

Back in Nazarick, Momonga observes the three via Mirror of Remote Viewing with Slimeko and the protagonist. Whilst Shalltear slaughters multiple flying Chaos Beasts, Momonga cannot help but admire her skills and speed. Slimeko watching Momonga's growing interest is pleased. The former notices and asks if something is the matter, but the slime quickly directs his attention back at Shalltear. With that Momonga asks if the two noticed any new changes in Shalltear's behavior as she was not her usual self and was worried she was dissatisfied at something. The two delicately dodge the answer stating that Shalltear just wanted to regain her levels. Hearing that Momonga thinks that this exercise should solve that issue for Shalltear but decides to ask her directly when she returns.

In the air Shalltear's onslaught attracts the attention of a Giant Flying Chaos Beast as she has been killing its minions. Excited at the beast, Shalltear declares to take the opportunity and capture it as experimental material for Momonga. After weakening it enough, Shalltear orders the shocked two maids to bring it back to Nazarick. When she returns to Nazarick, Momonga congratulates her on her successful hunt. Shalltears only gives him a curt thanks despite Momonga praising her for her initiative in capturing a fine specimen and how her actions will benefit Nazarick. Again he notices her lack of reaction and worries that something is bothering Shalltear. In contract Shalltear is struggling internally to keep her emotions in check. When Momonga offers her a reward she declines. Shalltear seeing Momonga's persistence as evidence her plan is working is ready to begin phase two of her operation in the "Trial of Love", "Maximize Love". The vampire mutters that she no longer has any worries because she has lost her love for Momonga, feeling unfulfilled for her unrequited feelings. She tells him that its not his fault and departs leaving Momonga quiet.

In the library, Shalltear is applauded by Slimeko and the protagonist for completing the first and second stages, now she has Momonga's full attention. Shalltear unleashes her woes stating hwo she had to lie that she lost all her feelings for her master, but Slimeko encourages her to endure as it is all a test. Now that she is in the second stage of the plan, she should focus on amplifying Momonga's interest and have him approach her himself.

The next day, Momonga is experiencing bouts of emotional distress before his undead racial ability kicks in and suppresses it. He is fretting over what Shalltear said to him the other day, and cannot but feel guilty for leaving the Floor Guardian as she is. As a creation of his dear friend Peroroncino he feels he needs to make this right else Shalltear might end up hating him for the rest of her life.

On the 6th Floor in the forest, Shalltear is doing a sweep of the territory with her two Vampire Brides. While on patrol she wonders if her plan will succeed in attracting Momonga. Momonga's appearance though proves to her that her plan is working. Momonga asks if they could talk, but Shalltear prioritizes dealing with the Chaos Beasts in the area and then listen to what her master has to say. She does accept the offer of his help and the two go to engage the creatures. During one of their skirmishes with the Chaos Beasts, Shalltear 'accidentally' bumps into Momonga, though Momonga suspects it was planned. Now that all the Chaos Beasts have been taken care of Shalltear has one request for her reward that he asked for.

The two regroup at the Amphitheater to give Shalltear her reward, a bout with Momonga. There Slimeko and the protagonist come to watch the battle and cheer their friend under the pretense observing for experience. The match begin with Momonga launching [Triple Maximize Magic: Call Greater Thunder] but Shalltear escapes using [Mist Form], however Momonga counters this an attacks her intangible form using [Astral Smite] forcing her back into corporeal form. Shalltear then summons her Einherjar to coordinate her attacks on Momonga. She then uses [Regenerate] to heal her HP while her summon attacks Momonga. The Overlord conjures [Wall of Skeleton] to block it. Knowing that fighting the construct and Shalltear will be difficult, Momonga activates, [Body of Effulgent Beryl]. Shalltear uses [Purifying Javelin] and strikes him. While not fatal he goes to counterattack with [Maximize Magic Reality Slash] but before he completes his spell, Shalltear changes her outfit. Momonga is confused by this action and thinks maybe she is replacing her equipment for some kind of attack.

However in reality Shalltear is preparing for her final attack on Momonga's heart using gap moe. Momonga still befuddled is shocked when Shalltear rushes at him and embraces him and declares her love to him using her so- called attack: [Penetrate Maximize Love]. Dumbstruck by the declaration Momonga tells her to calm down, but Shalltear hearing this thinks that her love is not enough and loses control of her emotions.

Aftermath
Later back at the Round Table Room, Momonga hears the full story from Slimeko and the protagonist. They had been reading into his intentions and caused that there was this "Trial of Love". Though Momonga does not deny its existence, so not to damage their egos, he tells them that Shalltear's actions did attract his attention. Shalltear is still disappointed on how things turned out, but Slimeko encourages her that she may be able to retake the "Trial of Love" next time and win Momonga heart. Seeking to cheer her up Momonga tells her as a member of her family that he loves her, causing her mind to pause. The shocked Shalltear leaves the others in the room in awe and warns the Supreme Being to be careful in what he says next.