Collab with lingrimm! ^^ I did the line and basic colouring, they worked on the piece till completion (which was quite a lot, ack)

Siblings Faraday and Filis are planting a tricky little fungus, which, while growing, absorbs all kinds of toxins, thus purifying nearby plants, ground and even air to some degree. But once it is "mature", it becomes poisonous itself and starts to dispense it in its surroundings - one must track its growth very carefully and get rid of the ripe fungus.
It's the first time Faraday was able to purchase some for themselves so he has no real practice of cultivating it, which Sarysheen uses freely to mock him on x3
"Hey, if you two poison yourselves, can I take your stereos?"