1988, Shibuya… "Nirvana," a vicious cult led by the white-masked guru “GOD”, attacks the heart of Shibuya. Nirvana's insane antics, which was so horrific that the media coverage was covered up, led to a state of emergency that shook even the underworld… (Source: Shonengahosha, translated)

Includes the following chapters:

https://www.cmoa.jp/title/292631/

"I liked that woman, but she called me a wimp. I thought to myself, I only became a thug because I'm a wimp. A wimp and a thug are two words for the same thing." On a whim, Osamu, a low-level yakuza, takes in and hides Keiko from his fellow gang members, who were searching for her. When he wakes up in the morning, Keiko is already gone. When he goes into the office, he discovers that Keiko is a mistress of his gang boss. Eventually, Keiko is caught and she asks Osamu for help, what will he do......? (Source: cmoa, translated)

Cool, friendly Mariya is the undisputed king of his year! But why does he always hang around with shy and painfully awkward “Mr. Mannequin” Nachi? Can these boys withstand the non-stop judgment of a school filled with jealous rivals and confused classmates? A New Season of Young Leaves follows every sweet high and lonely low in the growing relationship of unlikely best friends. How will the most popular guy in class deal when his wallflower confidant suddenly steals the social spotlight...and a beautiful girl's affection? (Source: Indigo)

One day, Grete von Lilienthal realizes that she has been reincarnated as a character of the romance simulation game she was into in her past life. However, she is not the heroine or the villainess, but a nameless side character! All seems fine and well until she realizes that if she continues with things as they are, she will get caught up in a fire at her academy and die! Now, to avoid the death flag, Grete decides to change her major to magical medicine, which hasn’t had any applicants in years, so she can avoid the main building where the fire will happen. With the course of events now taking a turn away from what she knows, an incredibly handsome elite scholar is now her teacher. Furthermore, the heroine and the villainess keep trying to get together with her to talk and become friends! All she wanted was to quietly survive the events of the game, but somehow she’s now the center of attention?! *Source: MangaPlaza*