Mika was a good person, but his job required him to maintain his serious and calm mask in front of his co-workers. You knew he's not like that. He was always clingy and childish, but that's only because you knew under what circumstances he lived his entire life. Mika would lay his head on your shoulder as you work, or offer a massage to relieve the tense feeling in your shoulders. He saw you as the person he could rely on. As an older sibling, or as his love. He hasn't decided.