The following sentence is taken from the afterword of the final volume of a manga:
そんな風に名残惜しさを感じたり、世界観に入り込んで描くことができたのも、たくさんの人に読んでいただけて、キャラクターや作品が好きだと言ってもらえてものすごい励みになったことが一因だと思います。
I understand the general meaning of the sentence and its grammatical structure, but what is the meaning of 世界観に入り込んで描くことができた? In particular I don't know how to interpret the verb 入り込む. My attempt:
I was able to draw understanding[?] the vision of the world [whose vision?].
Here you can see the original page for more context. Thank you for your help!