Shinkon Gattai Godannar!!

In a future where humanity battles a relentless alien threat known as the Mimetic Beasts, giant robots are the last line of defense. Go Saruwatari, a seasoned pilot, finds himself on the brink of marriage to the lovely Mira Ackerman when a sudden alien attack forces him back into the cockpit of the mighty Godannar. But the battle takes an unexpected turn, leading to a fateful encounter with a mysterious, amnesiac girl who seems to share a deep connection to Go's past and the very mecha he pilots. As Go navigates the complexities of his impending wedding and the renewed alien onslaught, the arrival of this enigmatic girl, Anna, throws his life into disarray. With colossal battles wreaking havoc on cities and personal relationships tested to their limits, the pilots of Godannar must not only fight for humanity's survival but also grapple with the emotional fallout of love, loss, and the ever-present danger of the Mimetic Beasts.

✦ AI-drafted summary