Hajime no Ippo/Heartwarming

• The moment Ippo wakes up after his very first spar with Miyata to find out that he was accepted at Kamogawa Boxing gym, Sendo continuing to fight even when he was unconscious in response to the cheers of his supporters and Featherweight Champion Date Eiji symbolically handing the baton to Ippo when he retires. Even Coach Kamogawa's backstory can move you to tears.
• Ippo's relationship with Hiroko, his mother, is a Crowning Moment of Heartwarming ever since episode one. A specific example of this is the conversation Hiroko has with Alexander Volg Zangief after their match, which leaves Ippo comatose for a few days. When Volg asks her if she wasn't worried about Ippo's condition, she says she lost her will to complain after seeing Ippo work so hard.

Hiroko: "Whatever it may be, seeing your son work so hard, is a wonderful thing for any mother."

• Volg's return in the manga to Japan to get his Boxing gloves is one giant moment of fluff as Ippo and he get along fantastically, as he stays with Ippo and Hiroko for a few days. He leaves begrudgingly knowing that being there in Japan was "too warm and kind", and that if he didn't leave then, he'd never want to go. It becomes a Tear Jerker when he asks Hiroko to say "I'll pray for your success son" in Russian in his dead Mother's place, and responds "Thank you Mother". He leaves without saying goodbye to Ippo, but knows they already had their own kind of goodbye from their spar, telling Umezawa they'll meet again one day, in the ring.