Glory to Jesus Christ!/Слава Ісусу Христу!/イエス・キリストに栄光!
I am a Roman Catholic living in Tokyo, Japan, but currently attend services regularly at the Ukrainian Orthodox Church and serve as a member of the choir. I would like to transfer to the Eastern Catholic Church to learn more about the Eastern Christian tradition. The problem is that there is no Eastern Catholic Church in Tokyo yet. I have asked the Australian Ukrainian Catholic Church and the Ukraine Greek Catholic Church for advice on this, but have not received a response.
Of course, being a member of Roman Catholic Church does not hinder one from practicing the Eastern tradition. However, I am sure that everyone in this forum is well aware that the identity issue of whether to participate as a guest from another tradition or to place oneself in that tradition and do it as one's own liturgy is not a small one.
Would you give me some advice on what approach to take in the future?
Welcome to the forum!
First of all, a couple of questions: Which services do you regularly attend? Vespers? The Divine Liturgy on Sundays? If you attend the Divine Liturgy are you receiving Holy Communion? Do you attend Catholic Mass on Sundays? Do you receive Holy Communion there? Are there ANY Eastern Catholic parishes in Japan, perhaps within reasonable travel distance of where you are?
As a Roman Catholic, I'm sure you're aware of your obligation to attend Mass on Sundays. So, my first piece of advice is to (continue to) do that if you're not. One thing that was suggested to me once in light of the fact that I cannot attend an Eastern Catholic parish was to attend Roman Catholic Mass on Sundays, and to satisfy my Eastern Christian longings, attend Vespers on Saturdays and/or during the week at an Orthodox monastery just 15 minutes from where I live. Not a perfect solution, but that way I remain in Communion with the Catholic Church AND am still able to partake of and benefit from Eastern Christian liturgical services and all that surrounds that. You could, perhaps, attend Vespers at the Ukrainian Orthodox Church and then Mass at your Catholic parish. Or...a Vigil Mass at the Catholic Church on Saturday (if that is done in Japan) and then the Orthodox D.L. on Sunday. I wouldn't suggest, however, receiving Holy Communion at both :-)! That is, if the Orthodox priest even lets you!
You can learn much about the "Eastern Catholic tradition" from books, of which there is now a plethora, mostly Orthodox. There are also numerous online resources available. Of course, the best thing is to attend the Divine Liturgy if that is possible for you, but if you want to remain in communion with the Catholic Church...You can, perhaps, watch a livestream of an Eastern Catholic D.L. There are quite a few available--check the websites of E.C. parishes or the eparchial websites for availability-, although the time differences might be an issue for you. There are many, many videos available, for instance on youtube, that are well worth the time. Dn. Anthony Dragani, for example, at east2west.org has a number of them. Check out
https://godwithusonline.org/ Good stuff there! And, "Becoming Byzantine" at https://www.youtube.com/@becomingbyzantine2827/videos .
And then there's what Adamcsc suggested above.
Hope that helps, at least a little bit!
God bless!