i think part of it was Adam realising dedicating resources to go after Blake would be considered wasteful by his superiors and he was already due to head back to Mistral anyway - plus we don’t know how public their relationship was, a grown man dedicating part of an organization he’s in a position of power of to track down a still underage girl because he’s in ‘love’ with her could trigger a lot of red flags and, as Blake is the daughter of the former High Leader, that information could end up getting back to her parents and a veritable shitstorm following that

another possibility is that he just expected her to come crawling back when she realised she had nowhere else to go, like he didn’t think she’d put much thought into running away

Source: Overlord Volume 2, The Dark Warrior, page 97, by So-Bin

Albedo, meaning whiteness in Latin, is a character from Overlord and is most likely one of my favourite yanderes there is. Albedo is an overseer and supervisor to all of the floor guardians within the Great Tomb of Nazarick, which is the main base and where the story first takes place. She’s part demon and succubus, albeit this is because the main cast is demi-human to full heteromorphic. While there’s not a lot of background information to cover since she’s originally an NPC, she's deeply obsessed about Ainz, the main character of the series, and does anything she can for him.

Albedo is a yandere from Overlord, going by the definition I created in a previous post. Albedo, as described in the series, is madly in love with Ainz, to the point of obsession and absolute loyalty. She’s always competing for Ainz’s affection, going as far as to reprimand anyone that shows the slightest disloyalty to him and shows outbursts of anger if someone were to insult him, sharing a love rivalry with Shalltear, who is a vampire and also in love with Ainz. Otherwise, she’s often levelheaded in nearly every other situation. In addition to her outbursts of anger, she’s extremely jealous of anyone who gets close to Ainz, leading to her leaving the scene and punching a wall to vent her anger but plays it off as if nothing happened. Because she’s the overseer, she’s the most honest and upfront about when she thinks others have acted poorly, going as far as to cause Ainz to think of it as an annoyance. While this may seem unfavourable, she does it because she hates the idea of others criticizing him, since she loves him so much, and because anyone going against him would mean disloyalty or rebellion. She self-proclaims herself as his wife, despite how he may seem uncomfortable with it in his mind, and likes to take care of things without him knowing as to not cause him any more trouble. She enjoys sewing, cleaning and other household skills in order to be the best wife for Ainz. Albedo’s room is covered with images and mementoes of Ainz, but outside of this, she assures Ainz that her loyalty remains forever with him. Although she’s immensely happy with the time she gets to spend with him, the times she gets to sneak into his room or do things for him, she secretly fears that she may be abandoned one day and wishes to stay by his side forever. She ultimately tries her best to be as perfect as she can, always wearing a smile for his sake.

There’s one point within the series that I find especially important to bring up, and is elaborated more within the novel and source material. Otherwise being a bit disputed, the main argument is that Ainz, during the first episode/part of the series, altered Albedo’s personality in order to make her love him--as described by the “madly in love” part. Nonetheless, Albedo did still have a "choice" to fall in love. It’s shown throughout season 2 (novels 4 to 6), that the NPCs have become “human” (quotations because they’re demi-human, but you get what I mean) and are able to develop. There is also dialogue in the book where Ainz confronts her about how he changed her personality last minute, to which she was accepting of. To summarise the scene, Albedo says that even if she were to not have that description written on her profile, she would still be capable of loving Ainz as much as she does now. She elaborates that even if there's the possibility she wouldn't love him, what matters is that they live in the reality where she does love him. This moment was, honestly, one of the parts that made me love her more as a character.

I think I should add that, on top of Albedo being a great character within Overlord, the series and books to be really fun to read. If you’re interested in picking it up, I recommend watching the anime, and if you’re wanting more content, I highly suggest checking out the books and additional content. The books go into more detail and explain more, as well as allowing you to see what each character is thinking, which is something that the anime lacks. There is, of course, another yandere character, Princess Renner, but she’s more of a side character (currently), so I’m not sure I’ll be covering her in the future.