Although the QC is a powerful tool to obtain the electronic structures of molecules or materials, multi-step computation is required to obtain the practically meaningful physical or chemical values because most theories of QC are developed based on the orthogonal one-electron states, which are not experimentally observable. Hence, to incorporate QC in black-box optimization, it is necessary to perform QC in a black box by automating the multi-step calculations and the analysis of the obtained results (usually text files). There are several tools for constructing inputs to perform complex computations and parsing output files like cclib, ASE, and QChASM. However, these tools are still far from the black box that is ready to incorporate QC in blackbox optimization because their target is operating structure, distilling the total energy of the system, and one-electron-state based values. Furthermore, multi-objective optimization (optimizing multi-molecular properties) is necessary to obtain the practical materials through black-box optimization. Hence, the black box of QC should be a system that produces physically meaningful multi-properties.