In the autumn of his first year of middle school, Arata Kouda meets Kujima, a strange creature that sort-of looks like a bird. Since Kujima is hungry, Arata brings it home with him... But because of his older brother who failed his entrance exams, Kujima gets carried away by the situation and ends up freeloading at the Kouda residence. He says it's just until he makes it through winter, and the warmth of spring comes, but... (Source: Shogakukan, translated)

Just kill me! These are the words of Serafina de Lavillant, the strongest female knight in the West. After being defeated in a war with the East, she has become a prisoner of the barbarians! What awaits the captive Serafina is a life of revenge, torture, and humiliation... or so she thought! What she is offered instead is a marriage to the barbarian king?! An intriguing tale of otherworldly marriage is about to begin! (Source: Kodansha)

Our hero wakes up one day in a brand new world…but his new life doesn’t come with fighting skills or magic powers, or even arms and legs! He’s reborn as a helpless egg, stuck in an unfamiliar forest surrounded by terrifying, hungry beasts. But eggs hatch, hatchlings grow up, and humble beginnings can lead to something great. He’ll do his best to become the strongest dragon ever, and no measly shell will get in his way! (Source: Seven Seas Entertainment)

Second season of Isekai Nonbiri Nouka.