Dragon Bodyguard and the Lady

Kira, the only daughter of a Mitsuno jeweler, has had her dragon-man bodyguard, Ten-chan, by her side since she was a child. Once a crybaby and spoiled young lady, she resolved to become "worthy of Ten-chan!" and polished herself up, growing into a "powerful young lady" who is skilled in negotiations, mining, and welding! Ten-chan, a long-lived species, looks the same as she did over a decade ago, and watches over the young lady, who sometimes goes out of control. A young lady with a heavy heart and a cool dragon-man bodyguard. A relationship of protecting and being protected.