MC is a male. No Gay or BL or Lesbian or GL related stuff. Must have system so I can see the "character growth" For example, Levelling systems Cultivation Systems Ranking Systems. And yes must be action. Not in the mood reading mysteries. Adventure is huge yes. Romance and Harem acceptable only if they are decent. Unlike typical woman who introduce earlier in novel ended up discarded like trash at the end because no Growth. Managing their own fief or company also fun Novel I thought is decent back then. Mushoku Tensei 10/10 even after 3 years this novel still leave me good impression. Glad anime did good. Martial World 9/10 ending kind a meh. But fun Reincarnated Thief 9/10 It is good, because less repeating grinding. I love guild waging war. The Legendary Moonlight Sculptor 8/10 Very interesting MC personalities. The romance kind a bad. The World Online 10/10 I FUCKING LOVES THIS. Well Because I am huge simp of sword and shield war. And more which I forgot. Oh I also accept Royal road
Most of the stories in the Reading List: LINK under my avatar have reasonable character development that you can see. I also don't like moody angsty emo stories and none of those are on my linked listing. Especially try these from the list: Tree of Aeons I strongly recommend this as it has great imagination and varied characters. Chrysalis This story on Royal Road is the source of "For The Colony!" quips I Was a Sword When I Reincarnated (WN) The King's Avatar The WN is complete. It also has an anime and fansubbed live-action version that is also half-animated since it has footage from the mmorpg. Age of Adepts This story I really liked when it was on Gravity Tales' website. Of note is that the translator resisted Qidian / Webnovel empire and other heavy attempts to bring them into the paywall system when qidian/webnovel bought out the Gravity Tales website and then got almost all the translators to continue translating inside the paywall. Instead, the AoA translator and editor kept it free for everyone even to the point of opening up their own website to keep it going.
if you don't mind using mtl you can try: I Became a Progenitor Vampire - MC transmigrated as NPC in a game that has not been released, he became a leader of vampire race and build a vampire city Lords Trying to Survive: Strategizing from a Rundown Yard - Humans from earth transmigrated in an unknown continent and become scattered small Lords. It's kind of a mix between kingdom building and survival game Science and Technology Library - MC got knocked on the head and got a library inside his brain. He use the knowledge from library to build a tech company Sign In, The Man is on an Isolated Island and He has Just Build a Luxury Villa by Himself - Humans from earth transmigrated in an unknown world and lives separately on scattered island. MC got a sign-in system so he's OP but it still fun to read