While at an engagement party for Yamamoto's ex-girlfriend Ririko, Yamamoto remembers back on their relationship and those that followed...

When Mayumi’s fiancée leaves her for another woman, Mayumi impulsively decides to move away and start over again by the seaside. Once there she meets Rin, a tough but kind single mother who runs the housing complex Seagull Villa. While the two women might not have a lot in common, they’re drawn to each other, and the relationship growing between them is deeper than they expected. Sail away on this tale of romance by the sea!

(Source: Seven Seas Entertainment)

Nervous about being alone with her new boyfriend, Takeda, Yuma insists that her once angelic childhood friend, Hotaru and Hotaru's boyfriend come along for a double date. But when Hotaru begins to touch Yuma and volunteers herself as "practice", Yuma feels inner turmoil as she enjoys the now devilish Hotaru's kiss more than Takeda's.

This manga is a collection of yuri romance short stories. Most of the stories take place in school, though one features an idol group. A few stories involve sexual situations, but others are more focused on feelings and tension. The first story features a girl whose secret place to be alone is discovered by a popular girl from school. Other stories include an ambiguous relationship at an all-girl's school, a girl who meets a gorgeous exchange student, and a trip to buy lingerie that ends up in an unexpected situation.

(Source: MangaDex)

Reo and Meiko were friends in high school. However, now Reo is serving as Meiko's slave, doing whatever Meiko requests. The story uncovers why their relationship turned out this way.

New manga editor Haruka has just been assigned to her favorite manga artist ever, Kuroi Ritsu. Kuroi-sensei's manga, "With You" motivated her to turn her life around. When she finally meets shut-in, mopey, entirely unfashionable Kuroi-sensei, Haruka is in for a bit of a shock.
(Source: Okazu)

1-2. Cocytus
3-4. Moratorium
5. Moratorium: Itsuki Saide