Last time he wore them after they were "fixed" he saw Tachibana in a maid outfit. Now he saw guy Tachibana as a girl. It might be that after he asked for them not to show people naked, the shopkeeper made them show what he desires.
y'all come on quick we need to go on an emergency trip to a shrine in Japan and dump all the coins as a sacrifice for the yuri gods to intervene in this
If Tachibana was at least useful in some way as a guy then this would be a real moral question, as it is: he is only a purpose puppy make for Jinguuji's girl