Taraku Uon has an Original Character Design credit on Waiting in the Summer.
original character design
TV anime / 2012
TV anime / 2002
OVA / 2001
TV anime / 2005
TV anime / 2003
OVA / 2014
OVA / 2002
OVA / 2004
OVA / 2005
OVA / 2026