Reiji invents a special sauce from rare nuts to help a flagging restaurant. Later on, he invents an aphrodisiac for a client, but it gets drunk by his assistants.
Reiji invents a medicine to attract wild animals to aid a huntress, and later a medicine to repel animals from garbage. Later, he helps out Mina with travelling out of her home.
Reiji invents soap for a lord who wishes to connect with his adolescent daughter. Later on, he invents a potion that can temporarily raise the dead to aid a friend.
