Masaomi Yamada is a reclusive teacher featured in Onegai Teacher. He is also referred to indirectly by Koishi in the second after they grew closer. He is well off and spends most of his time and money on his dream of making human powered aircraft. When a heart broken Koishi was heart broken he comforted her, by mentioning that even though his planes failed to fly that building them is also fun. If something fails and you have fun doing it was worth the effort invested.

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