DEEP 38 took place on October 23 in Korakuen Hall, Tokyo, Japan. The fight results are as follows:
- Katsuyori Shibata fought Yasuhito Namekawa to a Draw
- Ryuta Sakurai defeats Sojiro Orui via Split Decision
- Yusuke Kawaguchi defeats Seiryu Seiryu via Majority Decision
- Satoko Shinashi defeats Yukiko Seki via Submission (armbar) in Rd. 1
- Riki Fukuda defeats Jason Jones via Unanimous Decision
- Takafumi Otsuka defeats Masanori Kanehara via Split Decision
- Eiji Ishikawa defeats Simeon Thoresen via Majority Decision
- Toshikazu Iseno defeats Masayuki Okude via Unanimous Decision
- Shunji Kosaka defeats Seigo Mizuguchi via TKO in Rd. 1
- Koichiro Matsumoto defeats Ryan Bow via Unanimous Decision