Nithian likes to tickle Shiroko. He loves him like he's his only son.
After Nithian picked up Shiro from school they went to a restaurant to have breakfast. Shiro was not that hungry so he just ordered a small burger that fits him. After they finished breakfast Nithian wanted to spend time with Shiro, so they sat on the grass where other people sit there for picnics and relaxing. Shiro didn't sit next to Nithian he sat a little bit far from him. Nithian started questioning "Why won't he make eye contact with me ?" Shiro was looking away more like he was hiding something, so Nithian stood up and lifted Shiro and sat him on his lap. Shiro was blushing because he didn't like being on the Nithian's lap so he slid down from Nithian because he wasn't comfortable.
Both of them stayed silent for a while "Why do you always treat me like I'm not even here ?" Nithian asked. "I-I just don't want to bother you too much, so that's why I avoid being with you for a while. You've been taking care of me ever since that night, so if I be with you every time you'll get bored of me." Shiro explained why he was avoiding him. Nithian started smirking then he suddenly laughed. The Nithian stopped laughing and patted Shiro on the head "Not on my watch!!" Nithian started tickling Shiro after he said that.
Shiro was laughing a lot "HAHAHAHA STOP PLEASE STOP I CAN'T BREATH HAHAHA STOP IT DADDY!!" Nithian stopped tickling Shiro after hearing what Shiro said. Both of them stayed silent for a while."Sorry... Sorry... I'm so sorry!" Shiro started tearing while apologizing. He started apologizing because sometimes he gets scared of Nithian for nothing. He still doesn't trust Nithian very much, he always tries to avoid him no matter what.
Nithian started hugging Shiro "One day I want to be called daddy by you. I don't really mind you calling me dad. You'll always be my little boy." Nithian hugged Shiro even more while saying those beautiful words to Shiro. Shiro is starting to trust Nithian after that moment.