Struggle to find higher-Tc superconductors-No night without dawn

Superconductors can be categorized into 3 groups depending on its $T$c's ; Matsu ( Pines: Tc$>$160K),Tak\'{e} Bamboo: 150K$>$\textit{Tc}$>$77K) and Um\'{e} (Um\'{e} blossoms: 77K $> T$c). At present stage, no``Matsu''superconductor exists, and only Cu-oxide superconductors are realized as a ``Tak\'{e}'' group. Another all superconductors including MgB$_{2}$, Fe-pnictide etc belong to the``Um\'{e}''group. Therefore, our next target is to find a new ``Tak\'{e}'' compound, new non Cu-oxide superconductor above 77K. We have many approaches to find higher-$T$c superconductors within the conventional synthesis conditions. In this conference, we review a personal struggle-successes and disappointments- how to find the higher-$T$c material.