Neku Sakuraba's Mansion?! (TWEWY)

What happens right after Neku completed the whole Reapers Game alone, and earned a not ordinary prize, but a Mansion in the Woods of HeartlandCity, Japan??? When he meets Professor Mr. Hanekoma (Mr. H.), would he find the 4 lost family spirits that's lost in the Haunted Mansion??? Can he find them all in time, or would he fail??? (This is a little like: (Luigi's Mansion), but really different)