I think this is a great series to introduce, in lite version the BL genre. It is definitely not hard-core in any way, but is a strong story none the less. It allows for the relationships to be construed from the characters interactions, and is a nice adventure story for those that don't read into things. This is definitely one that can be watched with parents in the room. I also would highly recommend the 3rd season and the OVA if you haven't seen them yet and finish this series.