For a lonely orphan, there is almost only one career path to success. That is to get a national qualification as an alchemist. After graduating from the Royal Alchemist Training Academy, which requires nothing but ability, Sarasa is presented with the rights to a store by her master. After being sent off by her generous mentor, Sarasa sets off on her journey, dreaming of a slightly elegant life as an alchemist, but upon arrival, she is shocked to find that the countryside is even more rural than she had imagined. However, even in such a place, she has to manage a store somehow to make a living.
Koudo Ikusei Senior High School is a leading prestigious school with state-of-the-art facilities where nearly 100% of students go on to university or find employment. The students there have the freedom to wear any hairstyle and bring any personal effects they desire. Koudo Ikusei is a paradise-like school, but the truth is that only the most superior of students receive favorable treatment.
Ayanokouji Kiyotaka is a student of D-class, which is where the school dumps its "inferior" students in order to ridicule them. For a certain reason, Kiyotaka was careless on his entrance examination, and was put in D-class. After meeting Horikita Suzune and Kushida Kikyou, two other students in his class, Kiyotaka’s situation begins to change.
Iwatani Naofumi was summoned into a parallel world along with 3 other people to become the world's Heroes. Each of the heroes respectively equipped with their own legendary equipment when summoned, Naofumi received the Legendary Shield as his weapon. Due to Naofumi's lack of charisma and experience he's labeled as the weakest, only to end up betrayed, falsely accused, and robbed by on the third day of adventure. Shunned by everyone from the king to peasants, Naofumi's thoughts were filled with nothing but vengeance and hatred. Thus, his destiny in a parallel World begins...
The story begins when the gods call a convention to decide the whether to let humanity live or die, and settle on destroying humanity. But a lone valkyrie puts forward a suggestion to let the gods and humanity fight one last battle, as a last hope for humanity's continued survival. 13 gods will fight against 13 human champions in one-on-one battles to decide whether humanity lives or dies.
Watching the news, Hanagaki Takemichi learns that his girlfriend from way back in middle school, Tachibana Hinata, has died. The only girlfriend he ever had was just killed by a villainous group known as the Tokyo Manji Gang. He lives in a crappy apartment with thin walls, and his six-years-younger boss treats him like an idiot. Plus, he's a complete and total virgin... At the height of his rock-bottom life, he suddenly time-leaps twelve years back to his middle school days!! To save Hinata, and change the life he spent running away, hopeless part-timer Takemichi must aim for the top of Kanto's most sinister delinquent gang!!
The story takes place in the mighty Northern field of Hokkaido, the time is in the turbulent late Meiji Era. A post war soldier Sugimoto, aka, “Immortal Sugimoto” was in need of large sums of money for a particular purpose…. What awaited Sugimoto, who stepped into Hokkaido’s Gold Rush with dreams of making a fortune, was a tattoo map leading to a hidden treasure based on hints inscribed on the bodies of convicts in Abashiri Prison?! The magnificent nature of Hokkaido vs vicious convicts and the meeting with a pure Ainu girl, Ashiripa!! A survival battle for a hidden treasure hunt begins!