This dream may represent a desire to reconnect with old friends or memories from your past. The setting of the dream, the last day of school, may symbolize the end of a chapter in your life and the beginning of a new one. The bus ride may represent a journey or transition to this new phase. Seeing your friends Vanya, Taya, and Yost Klein may symbolize different aspects of your past self or different relationships you had during that time. The surprise of seeing them together may suggest that you have lost touch with these parts of yourself or these relationships. The fun and carefree atmosphere of their gathering may represent a longing for simpler times or a desire to let loose and have fun. The struggle to leave the bus and retrieve your belongings may symbolize the difficulty of reconnecting with these old friends or memories. However, the help from Nastya Antonova may suggest that there is a way to overcome these obstacles and reconnect with your past. Overall, this dream may reflect a desire to revisit and reconnect with your past self and the people who were a part of it.