Provided are: a targeting molecule targeting a target cell which is selected from the group consisting of a stellate cell, a myofibroblast, a cancer-associated fibroblast, a tumor cell and a cell expressing STRA6, said targeting molecule being selected from the group consisting of (1) a peptide containing an amino acid sequence in the cell-binding region of RBP, (2) a variant peptide of the aforesaid peptide (1), said variant peptide having a comparable targetability to peptide (1), and (3) a peptide mimetic having a comparable targetability to peptide (1) or peptide (2)； a targeting agent, a carrier, a complex and a medicinal composition each comprising the targeting molecule； a method for treating, examining, diagnosing or monitoring a disease related to the aforesaid target cell； a method for labeling, detecting or imaging the target cell, etc.
