A few questions here:

There is any advantage or malus evolving a unit with skill 5/5 (100% affection and all the stuff) but with for example only 2/4 equip slot? The slot reset with evolve process? Care a shit? Just curious XD

When a unit evolve, the skill lvl reset? If reset. an evolved unit have the same skill that previous state?

There's a main japanese wikia? Want to take a look for future units ^^