Ren'ai Rankingu (Associated Names)

Conquer Love with an S-Rank Beauty! A Romance × Level-Up Romantic Comedy! In a world where “Romantic Ability” has become a ranked subject in high school as part of population decline countermeasures, Renji-an inexperienced, F-Rank student-unexpectedly finds himself receiving love lessons from Airi, an S-Rank beauty. Thus begins a rapidly accelerating, pure-hearted love comedy about…