Action

When Cheon Yeo-Woon is about to die someone from the future gives him a nano machine drastically changing his life. Now he begins his journey to become the strongest martial artist
The MC is cool because he still trains and works on himself instead of letting the system do everything for him. He also works smart when finding reliable allies which should lessen drama with his group (no backstabbing type of thing)

Thorfinn's father was killed and he vows revenge. Upon realizing he is too weak to kill the man in an honourable way and Thorfinn decides to join his father's killer in hopes of one day becoming strong enough to defeat him in a duel.
The art in this is amazing, along with the character development, action and plot. If you enjoy watching anime you should try watching the anime for this as well (the anime covers up to chapter 54 I believe)

I wish this wasn't a one shot
The art of this manga is stunning and it has a good plot that could definitely be made into a series

Eric became a soldier after his village was killed in a monster attack and later dies on the battelfield. He returns back to the past when he was a baby and decides to change everyone's fate.
The art is super nice is in this one and the earlier chapters were interesting. From my understanding from spoilers/people who read the novel this may/will become a harem in the future.

Note: This does contain mature themes (Like what happened to the sister)
A story about a boy who receives the power to go into people's dreams. He uses his new found ability to take revenge on his sisters murderers (amongst other crimes they did to her)
There are some flaws in the logic certain characters use like the police. Overall it's a good and quick read

Free on Webtoon
A God gives people the power over animals. The MC believes he has a weak animal but later finds out it's strong changing his life forever
This is one of the first webtoons I ever read. The art is very much old webtoon style and the story is pretty good. I liked how 'small' details in the beginning played a huge role in other parts of the story

Reiri's family was murdered by enemy soldiers causing her to lose everything. As she grows up she learns to fight and seeks death on the battlefield
The MC is a strong female lead. The author had very good pacing and development. Also, it is a pretty tragic story all around.

Very unique manga
The story is about Icchi learning the Afro-Brazilian martial art of Capoeira
This is more action based and shows multiple types of martial arts throughout the series. The main character Icchi is very strong in mind and body. She will do whatever it takes to protect and save the people she cares about. The art for this series is also very cool

Yamato receives a time travelling bracelet that allows him to go five-minutes into the future. When he goes into the future he finds out the Buddha statues have begun killing all the humans.
While this wasn't my favourite this is a good read to pass the time. I personally felt the ending was fast paced making it slightly unfulfilling