frozenspring's manga / #3 older brothers(2)

oldest bro = returnee after 8 years + has darkness he must contain- childish personality 2nd bro = regressor (22 yrs) 3rd bro = was in coma + possessed by a noble spirit (only healer on Earth) ML candidate 1: "mages's assistant" has tracking skills + blonde & blue eyes ML candidate 2: "drug dealer" alchemist & poison maker + black hair & monacle + MC's old boss @ 4 seasons ML candidate 3: "pretty information dealer" disguises skill- crossdresser + long hair & purple eyes