the premise similar to "the world God only know" but this time the setting is fantasy. i dont remember much, but MC is from modern world, either he was reincarnated or transported ion remember. basically, in future the world will be brink of destruction because the lack of HEROES, due to some potential girls in current timeline wont fall in love {hate men and some trivial stuff} thus the hero genes wouldnt passing to the next generation. So the goddess or divine being request MC to save the world by make those selected girl fall in love or taste the feeling of love.

mc is provided with some ability but not OP, from what i remember he can see "the love meter" that will helps him to gauge the target emotions. the first target is a short haired girl, she is a strongest sword-fighter in academy. cut short. mc succeeded the quest, but her memories about mc will faded and mc will jump to next target region and so on.

thanks n advanced

Be kind or get banned

nevermind. i found it

the manga name is "Kyou Kara Tsukaeru Isekai Ren'ai Manual"

Be kind or get banned