Thank you for appreciating Wren! I'm a little worried he'll be overshadowed by Jay in this part because of the nature of his interactions with Robin. He's got his good points, too!
Honestly you did well in crafting 2 really excellent guys!! Which I think is great, since it'll encourage players to really want all those endings, and not just for completion, but because it's gonna be amazing~ Jay is fun because of his unrest and banter with Robin, buuut, Wren has this special charm and the little "game" between him and Robin keeps me in suspense, like what will happen if Robin falters? Wren is quite smart, and has a high chance of winning against Robin methinks. It's all so well crafted for a simple story that takes place on a train!