Blood Devolution reduces a character’s level and resets all CP allocated in her skills and job specifications. Your character gets back all previously allocated CP along with bonus stats and bonus CP. The Devolution options, their costs and benefits are presented as follows.


Character Level
Your character must also be at least one level higher than the chosen devolution. For Lv.15 devolution, your character must be Lv.16.

Devolution Rights
Your character must have a Devolution Right. These are acquired on levels that are multiples of 10. When Alice reaches Lv.10, she gains a Right. However, each characters can only have one Right at a time. When Alice reaches Lv.20 she would gain another Right, that is, if the Rights weren’t limit to one at a time.

Devolution Rights are basically irrelevant at higher levels - if your character devolves and their resulting level is at least Lv.30, their Devolution Rights will not be spent. So, if Alice is Lv.60, she could Lv.30 devolve and still keep her Devolution Rights. Or she could Lv.15 devolve and Lv.15 devolve again, and she would still have her Devolution Rights. You should not do either of the two. They are just examples showing the mechanics of keeping Devolution Rights. Rather, if you wanted to devolve soon, you would level Alice to Lv.66 and Lv.65 devolve her to Lv.1. The bonuses of Lv.65 devolve are must greater. When she reaches Lv.10, she’ll gain a Right. In general, you don’t have to worry about Rights.

Blood Crystals
Devolution cost x amount for each blood crystal type (there are 12 types). This is the bottleneck for devolution. It’s no big deal for common blood crystals, but is for the rarer types like O. Often, the thing stopping you from devolving is that you don’t have enough of a particular blood crystal.

Devolution resets a character's allocated CP so you can reallocate them again to the same or different skills or job specifications. The character also gains bonus CP and bonus stats across all eight stats (HP, SP, Atk, Def, Tec, Men, Agi, Luc). These bonus CP and bonus stats stack. Say Alice devolves Lv.40 and Lv.65 on separate occasions. She’ll have (16+42) = 58 bonus CP and (5+13) = 18 bonus stats. At this time, I don't know the upper limit for the bonus.

For the PC version of the game at least, there’s a minor exploit with Massacre skills. For some reason, after devolving, all allocated CP in Massacre skills stay there, but you’ll still get back ALL your CP. Basically, if you’re going to devolve, put your remaining CP (if any) into Massacre skills. With max affection and after seeing their scenes, Blood Maidens can have a total of 7 Massacre skills. One CP can be allocated to max out each Massacre skill. That means you can save 7 CP after devolution.

You don't need Devolution to beat the game. Nevertheless, there are two cases (besides the Massacre Skill Minor Exploit) when you might want to.

• Early game, some skills had high CP and SP costs that discouraged you from allocating CP into them.
  
• You’ve found out that some skills are not as useful as you’ve thought.
  
• You’ve changed a character’s job and you want to allocate CP into those skills.

If both are true, then you’re likely near the end. Leveling up a devolved character is actually pretty fast. Say you have a Lv50 party. You Lv40 devolve Alice to Lv10. Getting her to Lv40 is quick. Getting her back to Lv50 is a bit slower, but not too much. The real limitation of devolution is that it costs a lot of blood crystals.