I was looking for two types of recommendations.

1. Anime and/or manga focused on trap (otokonoko) characters. It's better if the trap is the main love interest (like in "Prunus Girl") but it's also fine if it's just a side-character so long as it has some relevance.

2. Anime and/or manga where the MC is literally the last man on Earth (as in "Parallel Paradise") or one of the last few men (as in "World End's Harem") and nearly every girl wants to fuck him.