Valentine 2016 Event Re-Run/Main Quest

Letter from Matthew
One of the Login Rewards for February 14, 2016, is Letter from Matthew. Having this item unlocks a new quest.

Trivia

 * 1) Chapter 1's title refers to one step in the process of making chocolate.
 * 2) Chapter 2: "Mother" refers to EMIYA (reference from Fate/hollow ataraxia). "Trouble With Women" refers to Diarmuid's love spot, which is said to cause women to fall in love with him.