has sequel hana to ikkun: http://www.mangago.me/read-manga/hana_to_ikkun/ extra hana to odekake: http://www.mangago.me/read-manga/hana_to_odekake/ and spin-off moon and sun: http://www.mangago.me/read-manga/moon_and_sun_abe_akane/
Hana Ni Kuchizuke