Akuru Hayahoshi is an unlucky otaku office worker who just can't pull her husbando in the gacha game she's obsessed with, no matter how much money she throws at it. Until one day, she runs into the garishly gorgeous and freakishly lucky Ren Furutachi. A series of misunderstandings lead to a proposal, and Ren starts to full-on pursue Akuru. Akuru wants her husbando, and Ren wants Akuru as her waifu... Are these two ever gonna end up together?!
- Born Lucky: Ren is referred to as uncannily lucky, which helps contrast her with Akuru, who initially spends time with Ren just for better odds at her mobile game.
- Born Unlucky: Akuru, who just can't seem to pull her "husbando" in her mobile game's gacha lottery no matter how much money she sinks into it until she meets Ren. It continues in Akuru & Ren's Exchange Diary, where she sinks a ton of money into a raffle for merchandise based on her mobile game, and ends up with merch for every character except the only one she cares about.
- Crack Is Cheaper: In-universe, Akuru's mobile game obsession is leading her to actual financial ruin at the start of the original story.
- Companion Cube: Akuru is utterly infatuated with pursuing her "2D husbando" in a mobile game.
- The Fashionista: Ren, who's referred to as "garishly gorgeous".
- Love Triangle: In ~Love･or･die~, Akuru ends up having to compete with Aira's advances toward Ren.
- Manic Pixie Dream Girl: Ren, whose influence on Akuru's life is compared by the latter to an alien suddenly coming from space and proclaiming their love for an Earthling.
- Mistaken Declaration of Love: The crux of the story is Akuru confessing her love to her "husbando" from her phone game, and Ren mistaking it as reciprocation for her own Love at First Sight towards Akuru.
- Operation: Jealousy: An accidental example in ~Love･or･die~, wherein Akuru's jealousy over Ren's long-time friend, Aira Udou, leads to her accepting a marriage proposal from Ren.
- Otaku: Akuru is a downplayed example, as she's simply obsessed with a mobile phone game...though to the point of financial ruin. Her friend Shino is a more traditional example that's joined at least three doujin circles.
- Slice of Life: The focus of Akuru & Ren's Exchange Diary is the titular duo writing diary entries about days in their lives.
- White Collar Worker: Akuru and Shino are coworkers at an office.