Isurugi Ayuma

Spin-off manga set in the world of Corseltel no Ryuujutsushi series.

The adventures of Marciel and his dragons continues. In Koryuu Monogatari, the baby dragons have grown up a little. Wikipedia

Corseltel is a fantasy land where dragons and humans live together in harmony. Dragon Sorcerers, in return for borrowing power from the dragons to use magical spells, must take care of the dragon offspring. Mashel, said to be one of the best Dragon Sorcerers in all Corseltel, is able to use all 7 dragon types meaning that he must take care of 7 different dragon children. The dragon children, each representing the types (dark, light, fire, water, wind, earth, life) learn to harness their power through Mashel and also look up to him as a parent. The cuteness of the dragon kids and the life lessons they learn will capture many readers.

Corseltel, a sacred land where dragons and beastmen reside. Protected from the outside world by valleys and mountains, its inhabitants, including dragon mages (ryuujitsushi), live in harmony. The dragon mages are able to borrow and use the dragons' magic, but have to care for and look after the dragons in exchange. Several years ago, the late wind dragon mage picked up a child floating down stream in a crate. Now, the child has grown into Corseltel's greatest dragon mage, able to use all seven types of dragon magic: fire, earth, wood, water, wind, light, and dark. More like a dragon babysitter, caring after seven baby dragons, these are the adventures they face.