The chapter starts out with Annelotte having a dream about sucking some strange fruit which, much to her shock turns out to be Luna Luna's "Relic" and the next morning she's shown to have grown a few sizes, this prompts everyone to give it a suck (including Sigui) and get a bust boost, but it has an unfortunate "Futa" side effect. XD
The effects last the whole chapter and is stated to wear off after.
you can read the whole chapter here:
http://www.mangahere.co/manga/queen_...ion_zero/c011/