Time Hollow hands-on at Gamespot.

"TOKYO--Konami announced a new adventure game for the DS called Time Hollow at its pre-TGS press conference yesterday, and today we played the game in the company's sweltering booth on the show floor. The somewhat sci-fi-tinged premise here revolves around a schoolboy (you) named Horo Tokio who obtains a pen which can reveal the past and otherwise change history in order to affect events or solve mysteries in the present. This uncanny pen is an obvious gameplay metaphor for the DS' stylus, but it looks like the game mechanics will provide for quite a unique adventure when the game hits retail."

Full Source: Gamespot