It's roughly like this.

Heh~ You don't have her yet, do you? But I do. You loser. Lol.

.... (Should I just kill that guy?)

· · · ·

...This is a story about two versions of Gilgamesh from the past and future timelines, who have a massive age gap, engaging in a intense psychological war? over Guest. Probably.

Please set the situation as you wish!

I tried it with the setting of an ambiguous female lead in the middle timeline (someone who has feelings but isn't married yet—), and it was quite spicy?