Should i grail cu?

Cu is a common, and always good grail target. As the grailing rule goes:

80: For gameplay
90: For love
100: For solo memes.

Cu Chulain is a solid Lancer with Quick based NP ST, relatively easy to NP5 him and with 2-4 grail, you can assure to clear most enemies with Archer/Berserker classes in the game. He is also a very dependable guy at the backline with his sturdiness. In the far future, he will receive NP upgrade (sure-hit buff on top of that) and we also get Quick support, which will further increase his effectiveness. I think it is worth our grails for him. Beware that even at level 90, his stats are still a bit low compared with other 4* servants.

Personally I grailed him to lvl 80, but never use him anymore since he is still a weak attacker compared to my 4* servants. He is good for early and midgame thanks to his survivability.

I grailed my cu to lv 100 ... He's worth it