Natsu x Erza x Irene
Erza is motorboating Natsu at the same time, while he is sucking on one of Irene's tits with milk dripping out of his mouth and Erzs's nipples are also dripping milk. Erza amd Irene are also stroking Natsu's cock together.
Optional Dialogue:
Erza tells Natsu to not forget about Irene's other tit too.
Irene tells Erza not to worry and that Natsu will get daily milk.