Head-Butt Game! 4th! ← Don't abbreviate

Head-Butt Game, √16th installment! Hello everyone. This is Daily, whose school grade was closed despite being in the countryside. Exams are approaching, so it's quite tough. Let's be careful of the flu. But my posting frequency might increase? By the way, I survived the wave of flu. Going to Nagoya without a mask was really nerve-wracking. Here are some photos from Nagoya. Apologies if I've reused any. Now, let's play! Head-butt♪ Head-butt♪ Repeat twice. The starting letter is this: 『U』 The ending letter is this: 『TO』 What word will be formed? Let me know your funny answers in the comments!!