This is the fourth best route that
Hyperdia suggested for Ishikawacho to Ichiagaya to arrive around 10:30am:
09:32 ISHIKAWACHO - JR Keihin-Tohoku Negishi Line ¥620
09:36 YOKOHAMA - LIMITED EXPRESS HAYABUSA
bed train ¥6800
10:04 TOKYO - JR Chuo Line
10:13 OCHANOMIZU - JR Sobu Chuo Line
10:20 ICHIGAYA