the best f2p lineup for worldboss is

4-3-4-1-1 with Tonton
Watermain - Haku - X
Suigetsu - X - X
Tenten - X - X

You alread have Haku and Tenten so try farming Suigetsu with the Survival Shop and Elite Instances.
Later you can switch out Suigetsu for Chojuro if you get him and Tenten for her GNW version.
I would not use a passiv barrier because it falls off for the last round and you will lose a lot of dmg through that

For an example im using that team with 4 star Haku, 5 star Suigetsu, 3 star GNW Tenten with lvl 81 and 41k power and do between 650k and 700k dmg per run, that nets to about 2,7mio damage for the whole event

This post was last edited by Syldor at 2017-3-11 01:56

well you need to test if darui is better than haku (i cannt because i dont have darui)
dont forget daruis barrier vanishes on the 4th round, you can recast hakus though so i dont think it will be better anyway
like i already posted in my original post chojuro would buff your dmg if you use him instead of suigetsu, sadly havent gotten him either so i cant say how much better he is
This post was last edited by Syldor at 2017-3-11 18:36