The Honeymoon BOX edition contains:

~ An autographed exclusive piece, "My Sweet Darling" by the game's artist, Mizuno Tooko.
~ A drama CD entitled "Yuubi Naru Honeymoon".
~ Exclusive clear card set of featuring "Honeymoon no Omoide" illustrations.
~ "Kagayaku Mirai no Kaleidoscope", a small kaleidoscope with a clippable chain.

Also includes all Treasure BOX edition bonuses, which are:

~ A "Photo Library", which is a collection of illustrations featuring the two new characters Man and Toudou Naoya.
~ A drama CD entitled "Kokkei Naru Tea Party".
~ "Tea Party Fastner Charms", which are miniature clippable charms featuring SD/chibi designs of the characters alongside large drinks.
~ An autographed version of the package illustration by the game's artist, Mizuno Tooko.