五十鈴改二(水着)
The [[bikini]] [[official alternate costume]] of [i][[Kantai Collection]][/i]'s [[Isuzu Kai Ni (kancolle)|]], as seen in post #3263053. 

Her kai ni-exclusive swimsuit consists of a [[blue bikini]] worn with a [[blue sarong]] (both containing [[floral print]]), single [[anklet]], and a red-white striped [[innertube]] containing her anti-submarine [[rigging]].
isuzu kai ni (swimsuit mode) (kancolle)