Alvis, the hero, lost his life in a battle with the Demon King. However, he lived on... as a skeleton!?

Ending his career as the hero who defeated the Demon King, he spent 3 years sleeping, playing and enjoying every day. However, in order to find his long time friend, Izana, he once again enrolls as an adventurer, and changes his name from Alvis to Al the Skeleton. Due to his appearance being that of a skeleton, trouble is not out of the question for his near future!

Protecting travelling merchants, mapping unexplored dungeons and so on; whilst undertaking numerous requests, Al the Skeleton wields his sword another day in order to save lives.

I am cute, but I was a middle-aged researcher in my previous life?!
Surviving in another world with magic and sciences!!
The orphan Ren was riding the carriage after being sold, when she got involved into an accident, and got her previous life's memories back!
"I was... a middle-aged man!"
Indeed, she was a researcher in his thirties in her previous life, and had been living as an orphan girl up to now!
Ren will make use of her talents in magic and knowledge in science to survive in this harsh world in order to escape from the investor who bought her!

During the school trip Touka and his classmates are summoned to another world.
However, Touka was the only one with the lowest rank: E-rank — an extremely low status compared to his classmates. Thus, the former mob-character and abandoned hero, will absolutely become the strongest devil as he advances and strikes back.

At Hagakure Academy, there is Bunbu Ryoutou - a competition of Martial Prowess and Scholarship. Kaori Arimajiki is terrible at this competition, dubbed the "Academy's Weakest One." Kaori was bullied by his fellow classmate and considering quitting the school. Kiwako Soushuin, a beautiful yet eccentric girl who is also a member of the Student Council, went to his house and "convinced" Kaori to take a last shot at another Bunbu Ryoutou, should Kaori win "You will be on track to become this Academy's Strongest One," said Kiwako. What plan does Kiwako have in mind? What kind of situation Kaori will get himself into?