Tiny Boobs Giant Tits History

Tiny Boobs Giant Tits History is a short hentai manga that features a sister and brother pair, with the sister constantly depressed about her small breasts until her chest gets slapped one day by her brother, and to her surprise this causes them to grow.

Fast forward some time later, and she now has a massive chest, and she mercilessly teases her brother about them, who is not amused.

Some sexual tension later, Brother-Sister Incest happens.

Tropes common to this work include

 * A-Cup Angst: The sister feels this initially.
 * Breast Expansion
 * Brother-Sister Incest
 * Gag Boobs: For a teenager, her chest is extremely busty to the point of being nigh ludicrous, a fact her brother hilariously lampshades.
 * Slasher Smile: Worn by the sister in one panel, which sparked the "TITTY MONSTER" meme.
 * Slasher Smile: Worn by the sister in one panel, which sparked the "TITTY MONSTER" meme.