I haven't seen your other threads, but here's my experience of unneutered toms.
In the early 80's I lived in a shared house with landlord and landlady in situ. They "owned" an unneutered tom (long before I knew as much about being a good cat slave) who would disappear for several days at a time, then come home looking battered and exhausted, sleep solidly for several days (between meals), then disappear again. This seems to be the lifestyle of entire toms; a life which is usually cut short by traffic accidents or fighting.
Chances are that Yoshi will be home soon. When he is, do his girlfriends, unwanted kittens, him and yourself a huge favour by whisking him to the vet and getting him done. Keeping him unneutered as an indoor only cat usually results in attempts to bonk your leg, cushions etc, and is imho cruel.
Haven't checked your profile, but I'm assuming that you're male
Many men seem to feel really reluctant to have male cats neutered. I've tried advocating it to some who come up with all types of excuses and cross their legs
Good luck for Yoshi's safe return. One thing I tried when Fred went walkies for ten days (and he was neutered - he was visiting his feral friends and relations!) was to scatter poo from the litter tray around the perimeter of the garden (at dawn when no one was watching
). I read this on a website; it's supposed to mark his area and remind him where home is. He returned.