The succubus' target was a second grader!? So begins a seductive comedy with a clumsy succubus and a mature grade schooler!

The story follows Kiyozumi Kurokawa, a novice editor who is assigned to the editorial department of S ("Sandal") Bunko, which publishes light novels. Kiyozumi is determined to publish a million-selling hit series, but this task is easier said than done when his writers include a genius high school girl and an office lady whose last two series tanked.

It's the ultimate romantic comedy of a non-riajuu boy and two polar opposite sisters!
Haruta is going out with a shy beauty, Mafuyu. While he's distressed over being unable to even hold hands, he was able to enjoy youth with his girlfriend for the first time in his life. However, having encountered Mafuyu's devilish twin sister who's the extreme opposite of her, his happy days are coming to an end!?

From Aerandria Scans:

A voice echoes through the night - the voice of the boy who hit a girl with his bicycle and ran. The words are curses for the perfect older sister people constantly compare her to...

When Na hears the passionate wish made to the moon, she comes down to Earth in the shape of a butterfly to comply with that wish - in return for the sacrifice the butterfly requires.

Story 2: Two sisters, one is perfect and the other isn't.

Story 3: A dog and his owners thrown into financial ruin.

Story 4: A girl seeking vengeance on her bullies.

From MangaHelpers:
A collection of five spooky stories:
1) Tenchi Shinmei by HINACHI Nao & AMENO Hirume
Asuna Shio is a teenage girl with a very strong perception of the spirit world and has a shrineless god as a companion. One day, Shio's classmate is seen vanishing into a mirror. She reappears afterward, but seems changed for the worse in terms of personality. What has happened to her?

2) Gekkouchou ~Hyaku-nen no Koi~ by MOKOYAMA Jin
A two-tailed tiger-striped cat is taken in by a girl called Mitsu and given the name Torakichi. Torakichi is no ordinary cat, and the love and tragedy between them may be strong enough to transcend a simple lifetime.

3) Friend Doll by TACHIBANA Azusa
Mizuno Sachi spends almost all of her time studying, thanks to her demanding parents, and she doesn't really have friends. There's a boy she likes at school, but it seems impossible to get close to him. Suddenly, her stuffed bunny, Mimi, starts showing up in her dreams to advise her through her teenage life. But what is Mimi's motivation for all this help?

4) Tonari no Yomi-san by UMENO Hana
There's an urban legend about a girl who killed herself as a teenager, "Yomi-san," due to her insecurity over her appearance. Supposedly, her father stuffed her body, and, in her quest to become beautiful, the body seeks to take parts from pretty girls. At one school, several pretty girls have been mysteriously injured. Could the culprit be the dead girl, Yomi-san?

5) Oni no Sumu Shima by NANAMI Sora
Saki moves out to a rural area, where she has no friends. In her loneliness, she goes out to an uninhabited island, where she meets a new possible friend. He's a demon, but as Saki gets to know him, she finds him less and less frightening.

As a child, Yashiro Nonoyama developed an intense fear of men due to boys constantly bullying her. Now in high school, she dreams of being reunited with her first love: a girl who protected her one day from her bullies. Yashiro is in disbelief when a transfer student named Mikoto Saionji arrives who looks a lot like her first love, but she later discovers that Mikoto is actually a guy, and that he was her first love. Yashiro learns that Mikoto is rapidly turning into a girl, and the only way to counteract this change is for them to passionately make out with each other every day.