About four dollars. That’s all it takes to slip into a deep, steaming-hot bath at a neighborhood sento in Tokyo. You push through the rattling glass door and the steam wraps around your face like a warm welcome. The air smells clean, the tiles glow, and somewhere a tap is running. Above the bath, a hand-painted mural of Mount Fuji shines under soft golden light. Families soak together. Kids learn to balance a folded wet towel on their heads, giggling every time it slips. Grandfathers settle in with little plastic basins, shoulders finally dropping after a long day. Hot water all the way up to your chest. Tiles that have warmed three generations of the very same neighborhood. And afterward — the clink of a cold glass milk bottle, the little ritual everyone still loves. You step back into the evening air lighter, softer, glowing from the inside out. Some places don’t just clean your body. They warm your whole heart.