You would of completed achievement 1 of Get Your Heart On. However awards do not stack. Your awards will be distributed after the hunt has been finished which is 25th of February
You receive them upon login, you get 5 and you can give them to others as gifts because they are in your locker. It's a valentine's thing though
1. Raise your stats by upgrading your dorm. 2. You can buy EC's from the Nurse, Get some sent from an RS partner, or farm jobs for a 2% chance of getting an EC drop.
Gifts can have stat bonuses that can help in wars and etc, or they can just be something to make your showcase look more up to date.
Some gifts only look pretty in your showcase lol. Some other specific gifts raise your misc bonus which helps you while attacking someone or defending yourself.
Also, for a few of them it's just a higher acheivment level: ex. Acheivment Level 1 for a certain number and Acheivment Level 2 for the next one.
You can get ec (extra credits) by purchasing them from the nurse (Store, then go to Nurse), or as rare, random drops from jobs-try doing the easiest jobs for a higher chance of getting some drops but be aware that the drop rate is very low, and you might complete some jobs and not get any ec drops at all. Good luck!!