The title emphasizes "Dai Chichi" (large breasts), indicating the visual design focus for the main female characters. Version 1.1a Updates: Version updates in these types of games usually include: Bug fixes for progression flags. Additional "H-scenes" or expanded dialogue.
The suffix indicates this is not the initial release (V1.0) but a patched or updated version. In the world of indie audio dramas, version numbers can include: Dai Chichi Hitozuma Netoudan -V1.1a- -RJ01316416-