Whatsapp Warwick!!
Honestly it isn't that bat as other whatsapp builds!!
It has it's tankiness and it's damage, I recommend building deaths dace first after mythical cause it's the only little life steal you'll get lmao. It relies on having very pottent autoatacks thanks to shojin and your mythic, and trying to use your Q as much as you can so your autos hit extra hard. It also has a bit of extra speed and tankiness for you to not die instanly, and Axiom Arc is here to help with your R cooldown, that's basically where you are more usefull for your team, cause the combo of R + E with your runes is capeable of doing some serious damage, specially to squishy supports like seraphine, lux, brand, etc.

Unlike other Whatsapp builds, this actually holds pretty well against AD characters cause of Deaths Dace, so you can play it in a normal matchup without being DOOMED if you are not against full AP lmaoo.
Also your R has more range thanks to chemtank, so that with Axiom Arc is actually a not that neash combo!

I also recommend to play this with a taric in your team cause CC chains go hard and are very effective and he is the perfect sinergy for you to have like a 2 morbillion second CC chain, giving you a chance against 1v2 or at least trading in a Teamfight.

Well GL with this build cause YOU WILL BE NEEDING IT LOL.