TV-Series
Description
Lilithea is a central character in the anime Killed Again, Mr. Detective? where she serves as the assistant to the protagonist, Sakuya Outsuki. She is a 16-year-old girl with a distinctive appearance, characterized by her white hair that falls to her chest, purple eyes, and a set of unique fashion accessories including a hairband, twin ahoge, detached sleeves, gloves, boots, and asymmetrical stockings.

As Sakuya's assistant, Lilithea plays a crucial role that goes far beyond simple administrative support. While Sakuya possesses the supernatural ability to return to life every time he is killed, it is Lilithea who manages the immediate, tangible consequences of this power. She is the pragmatic anchor to his often cavalier attitude toward death, handling the logistics and emotional shock that follow each of his demises, which includes the unsettling task of disposing of his previous body. Her exasperated but devoted care in these moments provides a core source of both comedic relief and emotional tension within the narrative, with some analyses arguing that she is the most heroic character in the partnership due to her handling of these real-world repercussions.

In terms of personality, Lilithea is highly observant, dutiful, and intelligent, showing a strong capability for detective work in her own right. However, her demeanor is often described as having a kuudere personality, meaning she is typically cool and composed, though she harbors deeper feelings that occasionally surface. For instance, she exhibits a noticeable jealous streak when Sakuya converses with other women, hinting at hidden romantic feelings that are otherwise kept under wraps. Her introduction in the story has been noted as particularly quirky, as she demonstrates her keen observational skills by gleefully sniffing Sakuya's jacket and deducing exactly who he has been interacting with, a trait some critics have found off-putting while others see it as a testament to her sharp instincts. Despite these eccentricities, she is sincerely devoted to her work and to Sakuya, though she also wishes he would challenge himself more rather than sticking to low-risk cases.

Her role in the story is intrinsically tied to Sakuya's immortality. She is a constant presence by his side, and every time he reopens his eyes after being killed, she is there to help him reassemble the case and identify the culprit. Their relationship is defined by an easy camaraderie and friendship that is already well-established when the story begins, avoiding the typical "getting to know each other" phase. This dynamic is central to the series' premise, as Sakuya's lack of personal stakes in his own survival shifts the entire threat level and emotional burden onto Lilithea, making her well-being and emotional state a primary source of tension.

While Lilithea does not possess supernatural abilities like Sakuya, her own skills are notable. She is highly capable and observant, often functioning as a true partner in investigation rather than just a passive sidekick. Her development throughout the series is tied to her growing burden as the one who must absorb the real-world consequences of Sakuya's power, grounding the bizarre routine of his repeated deaths in a very human reality. She is the one who provides the necessary emotional context, making her an essential character whose personal arc is defined by her unwavering, if sometimes exasperated, loyalty and devotion.