3.443 out of 5 from 43 votes
Amira Hergal is a twenty year old woman who has travelled across the mountains near the Caspian sea in order to wed Karluk Ayhan, a young boy eight years her junior. Despite being far from her own village, Amira is a hard working girl who is eager to please and happily adapting to life in her new home. Now she lives a peaceful life with her new family, from going to meet Karluk’s nomadic uncle and baking bread to amazing the villagers with her archery skills. But when her old family decides to reclaim Amira and have her marry another man who will be more beneficial to the village, it seems her happy life with Karluk could be at an end...
Younger, yet mature boy? Checked
Older girl? Checked
Arranged marriage? Checked
Generic shoujo heroine? Not checked
Do I need to say more? Well, I do: it has a very different take on the subject, but it's still sweet in it's own way (no "suger & fluff" though). Wait, why are you still reading this recommendation? Go read Otoyome-gatari instead.
Airi has always dreamed of marrying her fated true love and living a normal, happy life – a dream disrupted forever when Aram, a prince from another world, emerges from her grandmother’s mirror. She takes the young prince home with her thinking he is a lost child, giving him a home cooked meal and a place to sleep. However, in the morning she discovers that, as the result of a magic spell, Aram transforms into a 17-year-old boy whenever it’s dark, and her kiss is the only way to change him back! If that wasn’t enough, Aram is in hiding from his older brother, the evil sorcerer Jeile, who has fallen in love with Airi and intends to make her his bride! Will Airi ever be able to find her happily-ever-after?
You know the drill: high school girl x (mature) elementry school kid. Both Dear Mine and Merupuri have this going on, except Merupuri has this whole age transformation and magic mumbo jumbo, while Dear Mine has some shoujo-style fluff instead. If you liked one of those, you might want to take a look at the other one too.
Please Save My Earth is very different from Dear Mine, it actually has a plot and there is some heavy drama there. However, there is one thing that those two manga have in common: pairing a high school girl with a grade school boy. If you thought that this (relativly) rare motive is interesting, you should give PSME a try.
Both series have a rich kid paired up with an older girl. While the romance does unfold in both of them eventually, the girl has to act more like an older sister than a lover due to the guy's young age. The age gap is greater in Dear Mine, but the duo there seems to get along better. If you liked one of the series it is very likely you'll dig the other one too.