Komachi, an extremely straight laced high schooler, encounters Enra, the son of the King of Hell, who is out to eliminate her as punishment of a grave sin that she will commit in the future.

From Shoujo Crusade:

It has been many years since the Taisho era. The daily private lesson life of a merchant's daughter, Aoi and a fallen noble, Reiichirou unfolds...!?

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Story from the cover of the manga:
Many years have already passed since the Taisho era began. Sonomiya Reiichirou who is a fallen noble turned tutor, and Maruya Aoi, the daughter of a newly rich dumpling seller, start this wonderful Taisho romantic love story. Reiichirou gives Aoi-sama strict and attentive lessons to help her become familiar with being amongst the rich and the powerful! However, when night falls, the lessons quickly change to private lessons!?

A special chapter was published in the 13th issue of Hana to Yume in 2011.

Kanadegumi follows a girl named Miyabi Neko and her interactions with five attractive young men. The story takes place in Tokyo and centers on an imperial opera company named Kanadegumi.

From Phoenix Serenade Scans:

A story set in the Taisho Era. Meet Miyabi Neko, a girl with bad luck from a small place called Izumo, who aspires to become an actress by joining the capital's most popular acting group Hanagumi! And after some hard work, she was finally accepted into Hanagumi! But, when she reaches the capital, there is some disturbing news. Apparently, she is not to join HANAgumi, but the capital's music group KANADEgumi! And she meets some strange but handsome young men on the way? What is Neko's life going to be like in the capital?!

Kiyora is a bored student at St. Joanna all-girls school. Using one of the books her father sent to her, she unleashes a demon, and then begins to investigate the disappearance stray cats from the school's campus in the hopes of unmasking the virtuous priest, Father Shion.

HENTAI IS BACK! Yukimura has always been able to attract perverts to her and what happens when she encounters Mido-kun, a super masochist pervert? Through a series of events, will she finally awaken her inner masochist?