(a) A person becomes a guardian for a minor only on appointment by the court.
(b) After a hearing under K.S.A. 59-30,130 , and amendments thereto, the court may appoint a guardian for a minor who does not have a guardian if the court finds the appointment is in the minor's best interest and:
(1) Each parent of the minor, after being fully informed of the nature and consequences of guardianship, consents;
(2) all parental rights have been terminated;
(3) there is clear and convincing evidence that the parents of the minor are unwilling, unable or unfit to exercise the powers the court is granting the guardian; or
(4) there is clear and convincing evidence that highly unusual or extraordinary circumstances exist that cause the court to appoint the guardian over the objection of a parent of the minor.