There’s nothing to know about it at this point beyond the name, though Moon Phase has listed its scoop in a purple font, indicating that it’s likely to a) be a PC game and b) contain ero elements. As anything with the words “to” “heart” and “2” in the title seems to be made of molten platinum these days this is one we’ll definitely be following. (no more)
It will feature the sub-heroines of the original game as kouryaku characters, most notably Ma-ryan-senpai. :3
Out of all the heroines of the original game, only Tamaki and Konomi will have endings in AD. (No Sasara I guess.)
Ma-ryan-senpai ftw :3