Get off at the Kamadaijuutaku-dai 1 Bus Stop. There is a park to the left when you face the direction toward which the bus is running.
Turn the corner where the park is and walk along the road. By the time you pass the park, you will come across a crossroads.
Turn to the right at the crossroads. At the end of the street, turn to the left. Then turn to the right at the end of the road which you will be facing before long.
When you walk a bit more, you will find the West Gate of the University on the left side.