Important things first: Reincarnation? Wishes? A System? Isekai? Magic? Harem? Doing whatever I MC want? Semi-OP MC? Revenge? This story has all of those.
Omniverse travel, Robing whole worlds, Kingdom Building, Yes to all of these, MC is Semi-OP and is on his path to becoming OP.
Sharingan at the start? nope. But MC has Tensegian. shameless Mc? yep. shameless comedy? yep from time to time. NTR. nope, I am not a fan of that stuff.
I am writing this novel after reading fanfic on web-novel in which the writer writes whatever he wants, so keep that in mind that it has also affected me.

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I am also uploading this on web novel

Note: the cover page is not mine, just took it from the first volume of Seirei Gensouki. All its credit goes to the creator, who draws it.
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First World -> Seirei Gensouki.

Second World -> Pokemon.

Next World -> Not decided ( give some idea)

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Update Schedule:

Monday -> 1xCh Journey of Void Survivor

Tuesday -> 1xCh Journey of Void Survivor

Wednesday -> 1xCh Journey of Void Survivor

Thursday -> 1xCh Journey of Void Survivor

Friday -> 1xCh Journey of Void Survivor

Saturday -> 1xCh Omniverse Trip With Gacha System (Seirei Gensouki), if possible

Sunday -> 1xCh True God of Creation in the Multiverse, if possible

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18 + Advance chapters on my Patreon:

Link -> https://www.patreon.com/Iekami-Sama_1126