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Broke young man + chainsaw dog demon = Chainsaw Man!

The name says it all! Denji's life of poverty is changed forever when he merges with his pet chainsaw dog, Pochita! Now he's living in the big city and an official Devil Hunter. But he's got a lot to learn about his new job and chainsaw powers!

Peerless Dad summary:
Its an amazing story about one martial arts journey through marriage, fatherhood, and battles.

After overcoming the threat of Acnologia and Zeref, Fairy Tail has become stronger and more energetic! The 100 year quest which Natsu and company left for, and also to the members who had remained at the guild, something new is going to happen!? Although the story was supposed to have concluded, a new adventure now begins!

Oda Akira, a high school student who excels in erasing his presence, was summoned along with his classmates to another world.

In this world of sword and magic, Akira and his classmates were asked to become heroes and bring down the demon king.

Having a bad feeling about the king and the princess who asked them, Akira uses his special skills to sneak into the king’s library, in hopes of discovering the truth.

Whether to help or abandon his classmates who knew nothing, it all depended on Akira.

His only purpose was to protect his master. And yet he was powerless to protect her. But fate has more in store for him as he gets another chance to protect his master once more and change his destiny.

Ore no Ie ga Maryoku Spot datta Ken – Sundeiru dake de Sekai Saikyou summary:

Onepunch man MangaOne punch-Man imitates the life of an average hero who wins all of his fights with only one punch! This is why he is called Onepunch man Manga. This story takes place in the fictional Z-City. The world is full of mysterious beings, villains and monsters that cause destruction and havoc. An association of heroes has been established to protect the citizens from all harms and enemies. People with superhuman ability can register themselves with the association that protects citizens.

Losing his memories as a compensation for a transfer to another world, the curtains of the story of Kelvin rise. While steadily getting stronger, he adds new subordinates by mastering his skills in hope to get powerful enough to summon his Angel Follower who he has supposedly fallen in love previous to the memory loss, but by the time he noticed it, he had obtained overwhelming power...

In this world, there are two types of people. Those Who have powerful "skills", and those who don't. People born with powerful skills, exterminate monsters to level up and become successful, while people without them, become failures,who are treated harshly by society. Follow the story of Fate, a guy who works as a gatekeeper, and whose only skill is gluttony, a skill that only makes him hungry.
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