Manga on-going

Recent
https://en.wikipedia.org/wiki/Try_Knights - since 2018, anime in 2019.

https://en.wikipedia.org/wiki/Zombie_Land_Saga - Comedy, horror - since 2018, anime began 4 days prior.

https://en.wikipedia.org/wiki/Vampire_Princess_Miyu - Action, Supernatural, Horror - since 2017.

https://en.wikipedia.org/wiki/H%C5%8Dkago_Teib%C5%8D_Nisshi - manga since 2017, anime from 2020 (s).

https://en.wikipedia.org/wiki/Saki_(manga) - latest since 2016.

https://en.wikipedia.org/wiki/Whistle! - original manga ended before anime, but manga continued in 2016.

https://en.wikipedia.org/wiki/Anima_Yell! - since 2016.

https://en.wikipedia.org/w/index.php?title=Teekyu - since 2015.

https://en.wikipedia.org/w/index.php?title=Yowamushi_Pedal - latest since 2014.

https://en.wikipedia.org/wiki/Tanaka-kun_is_Always_Listless - since 2014.

https://en.wikipedia.org/w/index.php?title=Days_(manga) - since 2013.

https://en.wikipedia.org/wiki/All_Out!! - since 2013.

https://en.wikipedia.org/wiki/Long_Riders! - since 2012.

https://en.wikipedia.org/wiki/Spirit_Warrior - Action, fantasy - since 2012.

https://en.wikipedia.org/wiki/Minami_Kamakura_High_School_Girls_Cycling_Club - since 2011.

10 years ago
https://en.wikipedia.org/w/index.php?title=The_Prince_of_Tennis - latest since 2009.

https://en.wikipedia.org/wiki/March_Comes_in_Like_a_Lion - since 2007.

Old manga
https://en.wikipedia.org/wiki/Tsuribaka_Nisshi - manga since 1979, anime ended 2003, films 2009 (s).

https://en.wikipedia.org/wiki/Captain_Tsubasa - since 1981, anime is on-going too.

https://en.wikipedia.org/wiki/Furiten-kun - manga since 2002, only anime in 1981.

https://en.wikipedia.org/wiki/Bio_Booster_Armor_Guyver - since 1985.

https://en.wikipedia.org/wiki/The_Kurosagi_Corpse_Delivery_Service - since 2002, live-action film in development.

https://en.wikipedia.org/wiki/Big_Windup! - since 2003.

https://en.wikipedia.org/wiki/Giant_Killing - since 2007.