Valentine 2018 Event Revival (US)/Main Quests

Letter from Mash
One of the Login Rewards for February 14th is Letter from Mash. 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.