Premieres January 12, 2025. Check out the ANN article for additional information. Synopsis for the first season from AniList:
Rentarou Aijou was rejected 100 times in middle school. He visits a shrine and prays for better luck in high school. The God of Love appears and promises that he’ll soon meet 100 people he’s destined to date. But there’s a catch—once destiny introduces someone to him, the two must happily love each other. If they don’t, they’ll die. What will befall Rentarou and his 100 girlfriends in high school?
I prefer the manga, simply because it’s easier to gloss over the parts that I’m less interested in. The anime adaptation is quite good though and the animation in the comedic scenes is well paced and high quality.