The third season of Arifureta Shokugyou de Sekai Saikyou. 
En route to conquer a Great Labyrinth with his allies and former classmates, Hajime Nagumo is sidetracked by a tragedy that befalls his party member Shea Haulia. After encountering a group of rabbitmen caught in an ambush, Nagumo learns that members of Shea's Haulia Tribe have been abducted by soldiers of the Hoelscher Empire. To alleviate the anxiety of Shea, whose father may be in mortal danger, Nagumo decides to head toward the empire and rescue the missing Haulias.

After arriving at his destination, Hajime is caught up in political turmoil between the empire and the Heiligh Kingdom. As princess Liliana S. B. Heiligh tries to formalize an alliance with the empire to protect her weakened kingdom against demon attacks, the Haulia Tribe plans to assassinate Emperor Gahard D. Hoelscher to free all rabbitmen from the empire's threat. Determined to protect his allies at any cost, Hajime will need to ignore all political considerations and unleash his unstoppable power on anyone who may stand in his way.
 
(Source: MAL Rewrite)

After returning from the Sunken Ruins of Melusine, Hajime decides to take Myu on one last adventure before they part ways. However, the trip ends up being much more dangerous than they expected.
 
Hajime and his party is transported to a mysterious ruined city, where they meet and join forces with the Liberators, who were also transported here from the past. They work together to return to their original worlds.

The time is near future-Tokyo, Japan in 2040. Reito, a young man suffering from an intractable disease, vows to reunite with his childhood friend Erisa and decides to "cold sleep" to cure his illness. When he wakes up five years later, the world was undergoing a major transformation. The MK (Male Killer) virus kills 99.9% of men on the planet. The ground was a super harem with 5 billion women for every 5 men. 
 
(Source: Crunchyroll)
 
Note: The series was originally scheduled to release in the Fall 2021. Delayed last minute, episode 1 aired as scheduled on October 8, 2021 as a "special advanced broadcast" with the rest pushed back to Winter 2022.

The second season of Arifureta Shokugyou de Sekai Saikyou. 
 
Transported to another world and left behind by his former friends, Hajime had to make his rise from literal rock bottom. It was in the labyrinth where he strengthened his weak magic and found several beautiful allies. Now after saving his classmates, he ventures for Erisen to escort Myuu and her mother. He'll fight and defeat anyone he has to in order to find a way home—including a god! 
 
(Source: Funimation)

Unaired 13th episode. 
 
To thank the group for all their hard work in the past, Shirase invites the party to enjoy the sunny beach. While enjoying the wonderful weather and pristine waters, an accident causes Masato to lose all his memories, including those of Mamako! 
 
(Source: Funimation)

What would you do if you got transported into a video game...with your mom?? That's the dilemma facing high schooler Masato Oosuki, who has been unwittingly thrown into an RPG world with his doting mother close behind as part of a secret government scheme. As an avid gamer, Masato is eager to show off his skills...but that's hard to do when your mom is an insanely overpowered, dual-wielding, multi-target specialist! 

(Source: Yen Press)

A video game-loving shut-in, Satou Kazuma's life should've ended when he was hit by a truck, but through a twist of fate, he ends up reincarnating in another world--and dragging the troublemaking goddess, Aqua, the wildly dorky mage, Megumin, and the unrelentingly delusional lady knight, Darkness, with him. 
 
Now, the Crimson Demon village that Megumin and Yunyun are from is facing a threat that could mean its ending. Kazuma and his gang follow Yunyun, who returns to the Crimson Demon village intent on saving it... when they are faced with their greatest threat yet! What will become of the unremarkable adventurer Kazuma's life in another world?! 
 
(Source: Crunchyroll)

When a classroom of students is transported to another world to act as its saviors, Hajime Nagumo finds himself the weakest link. As his friends and classmates are granted strong classes and impressive abilities due to their existing skills, he is given the weak title of Synergist. When a dungeon quest leaves him separated from his group, Hajime must discover his own talents or be left to rot in this world forever.
 
(Source: Seven Seas Entertainment)

Koudo Ikusei Senior High School is a leading school with state-of-the-art facilities. The students there have the freedom to wear any hairstyle and bring any personal effects they desire. Koudo Ikusei is like a utopia, but the truth is that only the most superior students receive favorable treatment. 

Kiyotaka Ayanokouji 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 Suzune Horikita and Kikyou Kushida, two other students in his class, Kiyotaka's situation begins to change. 
(Source: Anime News Network, edited)

OVA produced by the manga publisher Toranoana. 
 
A secret intercourse begins when a woman teacher feels lonely because her husband left her, then secretly, the female teacher plays with her teacher's friends at school. And one of the girls who knows the secret relationship wants to also follow-up sex. And at night at school, it all turns into a cosplay haven with 2 women having sex party. 
 
(Source: Translated and Edited from Nekopoi)

OVA produced by the manga publisher Toranoana. 
 
Maria is a high class Victorian Maid. She works incredibly hard to satisfy her master's every whim, whether in his study, the bath, or bedroom. Shy and sultry all at once, can you resist her allure and willingness to serve? 
 
(Source: H-Moe)

Special Limited Edition OVA produced by the manga publisher Toranoana. 
(Source: AniDB)