That evening, Sensei wandered the streets and pondered about the tree he often passes by. The tree, that has a special significance for him. But the silence was interrupted by a phone call from Rika, eager to discuss something about Rin... Worried, Sensei arrived at her place as soon as he could.
Akira assumed, among other things, that Rin was back at self-harming again. Fortunately, it was not the case, although the matter is indeed troublesome. Rika, with all sincerity, told him what had happened the day he forgot his phone at the Dive-Bar. Sensei, dazed and confused, listens to her story and agrees to not talk about this with Rin.
Later on, the two converse about the hardships of being a parent, which is so close to both Akira and Rika. However, they get distracted by loud knock at the door...