Akamine struck after 19 minutes as Sendai stayed two points ahead of Sanfrecce Hiroshima at the top of the table.
Two goals in the last quarter of an hour guided Hiroshima to a 2-0 win over Jubilo Iwata.
Koji Nakajima put the hosts ahead after 76 minutes before Koji Morisaki sealed victory in the final minute.
Urawa Red Diamonds withstood a storming comeback by Sagan Tosu to complete a 4-3 win and remain third.
Red Diamonds took a 4-0 lead through Tsukasa Umesaki (seven), Tadaaki Hirakawa (50) and Genki Haraguchi (52, 54).
However, the visitors hit back with three goals in four minutes from Tozin (67) and a Naoyuki Fujita double (67 and 71) but ultimately they could not find an equaliser.
Nagoya Grampus Eight won 2-1 at Kashima Reysol.
Joshua Kennedy put them ahead after 10 minutes before Barbosa Leandro Domingues levelled.
A Hidekazu Otani own goal then gave the visitors three points midway through the second half as they remain fourth.
FC Tokyo kept up the chase with a 3-2 win over Gamba Osaka.
Hokutu Nakamura gave them a third minute lead which Severino Lucas doubled 14 minutes later.
Yasuhito Endo's penalty a minute after the half hour halved the deficit but Lucas restored the two-goal lead on the stroke of half-time.
Akihiro Sato made it 3-2 with a little under half an hour to go but Osaka held on.
A 74th-minute goal by Daigo Nishi earned Kashima Antlers a 1-0 win over Omiya Ardija while Yokohama F. Marinos drew 1-1 with Cerezo Osaka. Seitaro Tomisawa put the hosts ahead (31) with Yoichiro Kakitani levellung 10 minutes from time.
Shimuzu S-Pulse drew 0-0 with Kawasaki Frontale and Albirez Niigata won 1-0 at Consadole Sapporo thanks to Atomu Tanaka's fifth-minute goal.