Ruu1mm

Bella has been cursed with a poison that takes the life of anyone she touches. The only way to break the curse is to receive "true love"... Before long, Bella is living a life of solitude in the woods of the rumored "Witch of Poison," but one day she meets Anna, an unsuccessful painter...

(Source: Shogakukan, translated)

Belladonna no Koibito

Belladonna's Lover

ベラドンナの恋人

Yatosaki, Haru

Mai Amatsuka, a girl who loves sweets, is heartbroken after being dumped by her girlfriend. One day, she falls in love at first sight with Riri Kurosaki, a beautiful girl who has just arrived as a new waitress at the café she works at. However, Riri turns out to be a demon called a succubus? Mai shouldn't fall in love with her, but she can't forget her super sweet kiss! A cute and devilish girls' love comedy begins!

(Source: Kodansha, translated)

Included one-shot:
Volume 1: Tsukutte Agetai! Yomotsu Gohan

Akumade Amai Watashi no Kanojo

あくまであまい私の彼女

Ddogak

She just wants to start fresh so she can graduate in peace. She just wants to leave behind all the bad memories—her sleepwalking, the trauma from being bullied at school—all of it. She did everything she could to keep to herself, but the class president, Hae-on, just won't leave her alone. One day, when Seulbi visits the local lake Hae-on recommended, she comes across something she never imagined seeing in her wildest dreams: a wild, dark mermaid.

(Source: Webtoon Entertainment)

Dark Mermaid

검은 인어

Jiang, Sal

After spending over a century hiding in the shadows, powerful sorceress Sadako stumbles upon the dazzling world of social media and decides to post her way into her first real contact with humanity. She soon becomes an internet sensation, attracting a huge following of doting fans—and shocks them all by announcing she is a witch. The big reveal turns one follower called Hanako, a lonely young woman with seemingly inhuman strength and a curious resistance to magic, into a dedicated hater, and inadvertently sends them both on a whirlwind adventure beyond their wildest dreams!

(Source: Kodansha USA)

Wicked Spot

ウィキッドスポット

Mikami, Teren

Chigusa, Minori

Girls x Vampire

ガールズ×ヴァンパイア

Handa, Hotori

Nanahashi, Raku

Osananajimi wa, Nyaa to Naite Skirt no Naka

幼馴染は、にゃあと鳴いてスカートのなか

Hoshitsu

Natsume the vampire and Micchan the human are lovers. Micchan has resolved to become a vampire's progeny, but...

(Source: MANGA Plus)

Kimi no Tame nara

All for You

きみのためなら

*sow*

Kodomobeya Dragon

Child's Room Dragon

子供部屋ドラゴン

Shikushiku

"I'll be your mother."

After losing her biological mother, Mayu Kanda was abused by her guardian uncle every day, and could barely eat properly, but she just laughed it off. Until she met a mysterious beauty, Komachi Kamakura, who suddenly appeared.

Is she, who acts like a mother, a ray of hope for Mayu? Or...?

(Source: Ichijinsha, translated)

12 Manga Like Shiawase no Sumika

Belladonna no Koibito

Akumade Amai Watashi no Kanojo

Dark Mermaid

Wicked Spot

Girls x Vampire

Osananajimi wa, Nyaa to Naite Skirt no Naka

Kimi no Tame nara

Kodomobeya Dragon

Mayu no Uta

Okawari Itadaketa Darou ka?

Shuumatsu wa Watashi no Ie de Pan wo Tabemasen ka?

Kimi ni Naretara