Vee3055's manga / #Unmapped country(1)

Its a prequel to a previous manga i read about this one couple straling the main couples spotlight, in this manga its the same master just without his servant stealing the spotlight of the main couple, basically the price falls from the sky into an unmapped kingom where everyone is dying and it turns out its not an illness but flowers growing everywhere in the country, they are poisonous, the main couple originally are a kid master and his servant, the master is dying from the disease but the dtar of the manga saves everyone with his brothers help and the dying master gets cured and grows up and he and his servant finally get together, This is the first installment, ive already read the second instalment called Sonoyo no Dokoka, Tokoyo no Rakuen or (a paradise of eternal night in English), in the second installment theres mention of a third one in the making and i pray its about the master who constantly steals the spotlight and his servant shin and lia, i pray