Han-Bon Kiriougui is a formalised practice of defence against a punch attack. This gives the opportunity to learn the execution of blocks and counter attacks with precision and train reflexes that will become useful in sparring and self-defence.
Hoshinsul is a practice of self-defence against someone grabbing you and is closer to “street” self-defence. The attacker can grab the wrist, attempt to strangle, grab clothing. Hoshinsul techniques allow to free oneself of the attacker and neutralise them with strikes, armlocks, or throwing techniques.
Some elements of hapkido (or judo) are integrated into Han-Bon Kiriougui and Hoshinsul to broaden the tools at the practitioner’s disposal.