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Yūichi Hanzawa (半澤 友一, Hanzawa Yūichi is the ace pitcher and the cleanup hitter of Baseball club at Seitetsu. He can throw a fastball at a speed of over 150km/h, but the team is not so strong because he prefers watching midnight anime to training. Yūichi is also a member of Bishōjo Research Club. He only appears the light novels of Kämpfer.
|Blue Kämpfer||Natsuru Senō • Akane Mishima|
|Red Kämpfer||Shizuku Sangō • Mikoto Kondō • Midori Kuzuhara • Tamiko Shinomiya|
|White Kämpfer||Hitomi Minagawa • Rika Ueda • Ryōka Yamakawa • Sayaka Nakao|
|Entrail Animals||Harakiri Tora • Bakuhatsu Penguin • Chissoku Norainu • Hiaburi Raion • Hikinige Kaba • Kanden Yamaneko • Seppuku Kuro Usagi|
|Other Characters||Kanji Higashida • Masumi Nishino • Committee Chairperson • Assistant Committee Chairperson • Treasurer • Yūichi Hanzawa • Committee Chairperson's Older Sister • Kumeaki Mishima|