Here's what rhymes with kankokai.
guy chi quae kai by my high why die lie thy y buy cry sky tie vi hi shy sigh bi bye dye fi hy nigh pi pie thai thigh vie dei ly psi rye ty wir awry hai lye mai muy nai wry cy fy lai luy mei sy tai thei wai phi dry try fly spy fry ply sly pry tri trie pri sty aquae stye slier apply deny nearby rely comply nuclei defy goodbye belie decry untie amoebae codify overlie spry amebae turfy lanai scurfy overbuy supply reply thereby imply occupy whereby hereby modify alkali glorify notify quantify underlie alibi magnify nullify pupae descry edify mollify bonsai deify ossify retry blowfly horrify overfly mummify shanghai drachmai ripply banzais clarify qualify classify signify verify certify gratify purify alveoli amplify fortify pacify ratify rectify samurai unify falsify lullaby termini terrify typify crucify dignify liquefy mortify ramify vilify acidify firefly mystify triply vivify calcify misapply stupefy cumuli liquify scarify versify barfly dandify yuppify identify justify satisfy stimuli multiply specify simplify testify butterfly standby beautify solidify objectify oversupply personify resupply dragonfly ultrahigh emulsify petrify reunify prettify vitrify beatify gentrify speechify syllabify solemnify exemplify intensify diversify indemnify demystify detoxify electrify preoccupy stratify stultify reclassify revivify declassify hyperbolae refortify disqualify oversimplify dissatisfy transmogrify misidentify