Basically this kinda weird manhwa

a web toon manhwa

a man who every time he ejaculates, he will go back in time when he was in military days

this frustate him to no end and begin the story of him trying to find the cause and to fix it to the how it was aka he want ejaculate normally.

I remembered seeing this when scanning the "What's New!" page a few weeks ago... I think it must be Refrain Love.

That's definitely a weird plot. There can't possibly be more than one...